[ JK Wrangler — DTC Code Reference ]

[ HVAC / Climate ]

B1001 A/C Switch Request Input Circuit Low (ATC & MTC) B1002
A/C Switch Request Input Circuit High (CCN) B1016 Rear
Defrost Switch Input Circuit Low (CCN) B1031 Evaporator Fin
Temperature Sensor Circuit Low (MTC) B1032 Evaporator Fin
Temperature Sensor Circuit High (MTC) B10C1 A/C Select
Switch Stuck (CCN) B10C2 Rear Defrost Switch Stuck - Cluster

[ Cluster switches / compass ]

B123F  Menu Switch Stuck
B127A  Compass Performance
B1288  Trip/Toggle Switch Performance

[ Audio - Direct speaker outputs ]

B1401  Front Left Audio Speaker Output Circuit Low
B1402  Front Left Audio Speaker Output Circuit High
B1403  Front Left Audio Speaker Output Circuit Open
B1405  Front Right Audio Speaker Output Circuit Low
B1406  Front Right Audio Speaker Output Circuit High
B1407  Front Right Audio Speaker Output Circuit Open
B1409  Rear Left Audio Speaker Output Circuit Low
B140A  Rear Left Audio Speaker Output Circuit High
B140B  Rear Left Audio Speaker Output Circuit Open
B140D  Rear Right Audio Speaker Output Circuit Low
B140E  Rear Right Audio Speaker Output Circuit High
B140F  Rear Right Audio Speaker Output Circuit Open

[ Audio - Media and antennas ]

B1420 Audio Cassette Error / Inoperable Cassette B1421 Audio
CD Read Error / Inoperable Disc B1422 Audio DVD Read Error /
Inoperable Disc B1423 VES DVD Read Error / Inoperable Disc
B1424 Improper DVD - Wrong Region B1429 Radio Display High
Temperature B142A Radio Unit High Temperature B142C VES
Video Screen Disconnected B142D Audio Antenna Not Connected
B142E GPS Antenna Not Connected B142F Satellite Radio
Antenna Not Connected B1430 Satellite Radio Antenna Internal
Performance

[ Audio - Channel outputs (amplified systems) ]

B1460  Channel 1 Audio Speaker Output Circuit Performance
B1461  Channel 1 Audio Speaker Output Circuit Low
B1462  Channel 1 Audio Speaker Output Circuit High
B1463  Channel 1 Audio Speaker Output Circuit Open
B1464  Channel 1 Audio Speaker Output Circuit Shorted Together
B1465  Channel 2 Audio Speaker Output Circuit Performance
B1466  Channel 2 Audio Speaker Output Circuit Low
B1467  Channel 2 Audio Speaker Output Circuit High
B1468  Channel 2 Audio Speaker Output Circuit Open
B1469  Channel 2 Audio Speaker Output Circuit Shorted Together
B146A  Channel 3 Audio Speaker Output Circuit Performance
B146B  Channel 3 Audio Speaker Output Circuit Low
B146C  Channel 3 Audio Speaker Output Circuit High
B146D  Channel 3 Audio Speaker Output Circuit Open
B146E  Channel 3 Audio Speaker Output Circuit Shorted Together
B146F  Channel 4 Audio Speaker Output Circuit Performance
B1470  Channel 4 Audio Speaker Output Circuit Low
B1471  Channel 4 Audio Speaker Output Circuit High
B1472  Channel 4 Audio Speaker Output Circuit Open
B1473  Channel 4 Audio Speaker Output Circuit Shorted Together
B1474  Channel 5 Audio Speaker Output Circuit Performance
B1475  Channel 5 Audio Speaker Output Circuit Low
B1476  Channel 5 Audio Speaker Output Circuit High
B1477  Channel 5 Audio Speaker Output Circuit Open
B1478  Channel 5 Audio Speaker Output Circuit Shorted Together
B1479  Channel 6 Audio Speaker Output Circuit Performance
B147A  Channel 6 Audio Speaker Output Circuit Low
B147B  Channel 6 Audio Speaker Output Circuit High
B147C  Channel 6 Audio Speaker Output Circuit Open
B147D  Channel 6 Audio Speaker Output Circuit Shorted Together

[ Lighting - Panel / dome / reading ]

B1613  Panel Illumination Control Circuit Low
B1615  Panel Illumination Control Circuit Open
B161A  Courtesy / Dome Lamp Control Circuit
B161E  Reading Lamp Control Circuit

[ Lighting - Headlamps (low / high beam) ]

B162B  Left Low Beam Control Circuit Low
B162C  Left Low Beam Control Circuit High
B162F  Right Low Beam Control Circuit Low
B1630  Right Low Beam Control Circuit High
B1633  Left High Beam Control Circuit Low
B1634  Left High Beam Control Circuit High
B1637  Right High Beam Control Circuit Low
B1638  Right High Beam Control Circuit High

[ Lighting - Turn signals ]

B163B Front Left Turn Control Circuit Low B163C Front Left
Turn Control Circuit High B163F Front Right Turn Control
Circuit Low B1640 Front Right Turn Control Circuit High
B1643 Rear Left Turn Control Circuit Low B1644 Rear Left
Turn Control Circuit High (also:  Right Stop Lamp Control
Circuit High on some configs) B1647 Rear Right Turn Control
Circuit Low B1648 Rear Right Turn Control Circuit High

[ Lighting - Fog and tow ]

B1663  Rear Fog Lamp Control Circuit Low
B1664  Rear Fog Lamp Control Circuit High
B166B  Left Trailer Tow Lamp Control Circuit Low
B166C  Left Trailer Tow Lamp Control Circuit High
B166F  Right Trailer Tow Lamp Control Circuit Low
B1670  Right Trailer Tow Lamp Control Circuit High
B16B1  Left Stop Lamp Control Circuit High
B16F8  Front Left Fog Lamp Control Circuit Low
B16F9  Front Left Fog Lamp Control Circuit High
B16FC  Front Right Fog Lamp Control Circuit Low
B16FD  Front Right Fog Lamp Control Circuit High

[ Lighting - Overcurrent faults ]

B17B8  Left Stop Lamp Control Circuit Overcurrent
B17B9  Right Stop Lamp Control Circuit Overcurrent
B17BA  Headlamp Leveling Motor Control Circuit Overcurrent
B17BF  Left Sidemarker Lamp Control Circuit Overcurrent
B17C4  Right Sidemarker Lamp Control Circuit Overcurrent

[ Doors / locks ]

B1801  Driver Door Lock / Unlock Switch Circuit Low - Cluster
B1806  Passenger Door Lock / Unlock Switch Circuit Low - TIPM
B1934  Driver Door Lock / Unlock Switch Circuit Stuck - Cluster
B1935  Passenger Door Lock / Unlock Switch Circuit Stuck - TIPM

[ Keyless entry / security - RKE fobs ]

B1A08 RKE FOB 1 Performance B1A09 RKE FOB 2 Performance
B1A0A RKE FOB 3 Performance B1A0B RKE FOB 4 Performance
B1A0C RKE FOB 5 Performance B1A0D RKE FOB 6 Performance
B1A0E RKE FOB 7 Performance B1A0F RKE FOB 8 Performance
B1A10 RKE FOB 1 Battery Low B1A11 RKE FOB 2 Battery Low
B1A12 RKE FOB 3 Battery Low B1A13 RKE FOB 4 Battery Low
B1A14 RKE FOB 5 Battery Low B1A15 RKE FOB 6 Battery Low
B1A16 RKE FOB 7 Battery Low B1A17 RKE FOB 8 Battery Low
B1A20 PRE-ARM Timeout B1A23 RKE Receiver Performance B1A24
Key Not Programmed B1A25 Invalid Key B1A26 Maximum Number Of
Keys Programmed B1A27 SKREEM Programming Performance B1A28
ECM Mismatch With SKIM B1A29 SKIM Basestation Mismatch B1A3C
Internal Siren Battery B1A3D Siren Battery / Loss Of Power
Supply B1A3E Siren / ITM Mismatch B1A3F ITM Arming Sequence
Performance B1A48 Intrusion Sensor 1 Internal B1A5F
Intrusion Sensor 2 Internal B1A6D Intrusion Sensor 3
Internal

[ Airbags / restraints - Driver / passenger squibs ]

B1B00 Driver Airbag Squib 1 Circuit Low B1B01 Driver Airbag
Squib 1 Circuit High B1B02 Driver Airbag Squib 1 Circuit
Open B1B03 Driver Airbag Squib 1 Circuit Shorted Together
B1B04 Driver Airbag Squib 2 Circuit Low B1B05 Driver Airbag
Squib 2 Circuit High B1B06 Driver Airbag Squib 2 Circuit
Open B1B07 Driver Airbag Squib 2 Circuit Shorted Together
B1B08 Passenger Airbag Squib 1 Circuit Low B1B09 Passenger
Airbag Squib 1 Circuit High B1B0A Passenger Airbag Squib 1
Circuit Open B1B0B Passenger Airbag Squib 1 Circuit Shorted
Together B1B0C Passenger Airbag Squib 2 Circuit Low B1B0D
Passenger Airbag Squib 2 Circuit High B1B0E Passenger Airbag
Squib 2 Circuit Open B1B0F Passenger Airbag Squib 2 Circuits
Shorted Together

[ Airbags / restraints - Seat belts / acceleration sensors ]

B1B54  1st Row Passenger Seat Belt Sensor Circuit Low
B1B55  1st Row Passenger Seat Belt Sensor Circuit High
B1B56  1st Row Passenger Seat Belt Sensor Circuit Open
B1B70  Up-Front Left Satellite Acceleration Sensor Internal
B1B71  Up-Front Right Satellite Acceleration Sensor Internal
B1B72  Left Side Satellite Acceleration Sensor 1 Internal
B1B75  Right Side Satellite Acceleration Sensor 1 Internal

[ Airbags / restraints - Occupant classification (seat weight sensors) ]

B1B78 Passenger Seat Weight Sensor 3 - Left Front
Performance B1B79 Passenger Seat Weight Sensor 3 - Left
Front Input Circuit Low B1B7A Passenger Seat Weight Sensor 3
- Left Front Input Circuit High B1B7D Passenger Seat Weight
Sensor 2 - Right Front Performance B1B7E Passenger Seat
Weight Sensor 2 - Right Front Input Circuit Low B1B7F
Passenger Seat Weight Sensor 2 - Right Front Input Circuit
High B1B82 Passenger Seat Weight Sensor 4 - Left Rear
Performance B1B83 Passenger Seat Weight Sensor 4 - Left Rear
Input Circuit Low B1B84 Passenger Seat Weight Sensor 4 -
Left Rear Input Circuit High B1B87 Passenger Seat Weight
Sensor 1 - Right Rear Performance B1B88 Passenger Seat
Weight Sensor 1 - Right Rear Input Circuit Low B1B89
Passenger Seat Weight Sensor 1 - Right Rear Input Circuit
High B1B8D Driver Seat Track Position Sensor Circuit Low
B1B8E Driver Seat Track Position Sensor Circuit High B1B8F
Driver Seat Track Position Sensor Circuit Open B1B93
Passenger Seat Track Position Sensor Circuit Low B1B94
Passenger Seat Track Position Sensor Circuit High B1B95
Passenger Seat Track Position Sensor Circuit Open B1BA5
Airbag Squib Configuration Mismatch B1BA6 Occupant
Classification Undetermined B1BA7 Occupant Classification
System Verification Required B1BA8 OCM System Out Of
Calibration / Not Calibrated B1BAA Occupant Classification
Module Configuration Mismatch B1BBA Passenger Seat Weight
Sensor Supply Circuit B1BBB Passenger Seat Weight Sensor
Inputs Shorted Together B1BBC OCS Negative System Weight
B1BBD OCM Current Configuration Table Unprogrammed B1BC7
Deployment Data Record Full

[ Airbags / restraints - Side thorax / pretensioners ]

B1C27 Left Side Seat Thorax Squib 1 Low B1C28 Left Side Seat
Thorax Squib 1 High B1C29 Left Side Seat Thorax Squib 1 Open
B1C2A Left Side Seat Thorax Squib 1 Shorted Together B1C2B
Right Side Seat Thorax Squib 1 Low B1C2C Right Side Seat
Thorax Squib 1 High B1C2D Right Side Seat Thorax Squib 1
Open B1C2E Right Side Seat Thorax Squib 1 Shorted Together
B1C38 1st Row Driver Retractor Pretensioner Circuit Low
B1C39 1st Row Driver Retractor Pretensioner Circuit High
B1C3A 1st Row Driver Retractor Pretensioner Circuit Open
B1C3B 1st Row Driver Retractor Pretensioner Circuit Shorted
Together B1C47 1st Row Passenger Retractor Pretensioner
Circuit Low B1C48 1st Row Passenger Retractor Pretensioner
Circuit High B1C49 1st Row Passenger Retractor Pretensioner
Circuit Open B1C4A 1st Row Passenger Retractor Pretensioner
Circuit Shorted Together

[ Ignition / system voltage ]

B2101 Ignition Run/Start Input Circuit Low B2102 Ignition
Run/Start Input Circuit High B210A System Voltage Low (WCM)
B210B System Voltage High (WCM) B210D Battery Voltage Low
(WCM) B210E Battery Voltage High (WCM) B212C Ignition
Run/Start Input Circuit Open B212D Ignition Run Only Input
Circuit Open B2142 Ignition Off Draw (IOD) Fuse Not Present
B219A Ignition Unlock Run/Start Control Circuit Overcurrent
B219F Ignition Off Draw (IOD) Fuse Blown

[ Module / configuration mismatch ]

B2201 Calibration Mismatch B2204 ECU Configuration Mismatch
B2205 Original VIN Missing / Mismatch B2206 Current VIN
Missing / Mismatch B2207 Occupant Restraint Controller
Internal 1 B2208 Occupant Restraint Controller Internal 2
B2209 Occupant Restraint Controller Internal 3 B220A
Occupant Restraint Controller Internal 4 B220B Occupant
Restraint Controller Firing Stored Energy B220C Occupant
Restraint Controller Accelerometer 1 Internal B220D Occupant
Restraint Controller Accelerometer 2 Internal B2212 Occupant
Classification Module Internal B2222 Satellite Radio
Receiver Internal B2224 SKREEM Internal B2229 SKREEM
Internal - SKIM Immobilizer B222A Vehicle Line Mismatch
B222C Vehicle Configuration Not Programmed B223B Vehicle
Configuration Mismatch B223C Intrusion Transceiver Module
Internal B223D Occupant Classification Module DTC Present
B2254 Column Lock Module Internal

[ Wipers / washers / horn ]

B2304 Wiper Park Switch Input Circuit Low B2305 Wiper Park
Switch Input Circuit High B230D Rear Wiper Park Switch Input
Circuit Low (Stuck Low) B230E Rear Wiper Park Switch Input
Circuit High (Stuck High) B2323 Headlamp Washer Motor
Control Circuit Low B2324 Headlamp Washer Motor Control
Circuit High B2339 Horn Switch Stuck

[ General ]

C0077 Low Tire Pressure C1404 Transfer Case Range Position
Sensor Circuit Low (TIPM) C1405 Transfer Case Range Position
Sensor Circuit High (TIPM) C1417 Front Differential Control
Circuit Low C1418 Front Differential Control Circuit High
C141D Rear Differential Control Circuit Low C141E Rear
Differential Control Circuit High C1501 Tire Pressure Sensor
1 Internal C1502 Tire Pressure Sensor 2 Internal C1503 Tire
Pressure Sensor 3 Internal C1504 Tire Pressure Sensor 4
Internal C2100 Battery Voltage Low C2101 Battery Voltage
High C2207 Off Road ECU Internal

[ Engine sensors - Position / timing ]

P0016 Crankshaft / Camshaft Timing Misalignment P0315 No
Crank Sensor Learned P0325 Knock Sensor 1 Circuit P0335
Crankshaft Position Sensor Circuit P0339 Crankshaft Position
Sensor Intermittent P0340 Camshaft Position Sensor Circuit
P0344 Camshaft Position Sensor Intermittent

[ Engine sensors - Pressure / temperature / air ]

P0071  Ambient Air Temperature Sensor Performance
P0072  Ambient Air Temperature Sensor Circuit Low
P0073  Ambient Air Temperature Sensor Circuit High
P0107  Manifold Absolute Pressure Sensor Circuit Low
P0108  Manifold Absolute Pressure Sensor Circuit High
P0111  Intake Air Temperature Sensor Rationality
P0112  Intake Air Temperature Sensor Circuit Low
P0113  Intake Air Temperature Sensor Circuit High
P0116  Engine Coolant Temperature Sensor Performance
P0117  Engine Coolant Temperature Sensor Circuit Low
P0118  Engine Coolant Temperature Sensor Circuit High
P0129  Barometric Pressure Out-Of-Range Low

[ Engine - Throttle position ]

P0121 Throttle Position Sensor 1 Performance P0122 Throttle
Position Sensor 1 Circuit Low (TPS / APPS) P0123 Throttle
Position Sensor 1 Circuit High (TPS / APP) P0124 TPS / APP
Intermittent P0221 Throttle Position Sensor 2 Performance
P0222 Throttle Position Sensor 2 Circuit Low P0223 Throttle
Position Sensor 2 Circuit High

[ Engine - Cooling ]

P0125 Insufficient Coolant Temperature For Closed-Loop Fuel
Control P0128 Thermostat Rationality P0218 High Temperature
Operation Activated P0480 Cooling Fan 1 Control Circuit
P0481 Cooling Fan 2 Control Circuit P0691 Cooling Fan 1
Control Circuit Low P0692 Cooling Fan 1 Control Circuit High
P0693 Cooling Fan 2 Control Circuit Low P0694 Cooling Fan 2
Control Circuit High P2181 Cooling System Performance P1115
General Temperature Rationality

[ O2 sensors - Bank 1 / Bank 2 ]

P0131 O2 Sensor 1/1 Circuit Low P0132 O2 Sensor 1/1 Circuit
High P0133 O2 Sensor 1/1 Slow Response P0135 O2 Sensor 1/1
Heater Performance P0137 O2 Sensor 1/2 Circuit Low P0138 O2
Sensor 1/2 Circuit High P0139 O2 Sensor 1/2 Slow Response
P013A O2 Sensor 1/2 Slow Response - Rich To Lean P013C O2
Sensor 2/2 Slow Response - Rich To Lean P0141 O2 Sensor 1/2
Heater Performance P0151 O2 Sensor 2/1 Circuit Low P0152 O2
Sensor 2/1 Circuit High P0153 O2 Sensor 2/1 Slow Response
P0155 O2 Sensor 2/1 Heater Performance P0157 O2 Sensor 2/2
Circuit Low P0158 O2 Sensor 2/2 Circuit High P0159 O2 Sensor
2/2 Slow Response P0161 O2 Sensor 2/2 Heater Performance
P2271 O2 Sensor 1/2 Signal Stuck Rich P2273 O2 Sensor 2/2
Signal Stuck Rich

[ O2 sensor heater circuits ]

P0031  O2 Sensor 1/1 Heater Circuit Low
P0032  O2 Sensor 1/1 Heater Circuit High
P0037  O2 Sensor 1/2 Heater Circuit Low
P0038  O2 Sensor 1/2 Heater Circuit High
P0051  O2 Sensor 2/1 Heater Circuit Low
P0052  O2 Sensor 2/1 Heater Circuit High
P0057  O2 Sensor 2/2 Heater Circuit Low
P0058  O2 Sensor 2/2 Heater Circuit High

[ Fuel system - Trim and injectors ]

P0171 Fuel System 1/1 Lean P0172 Fuel System 1/1 Rich P0174
Fuel System 2/1 Lean P0175 Fuel System 2/1 Rich P0201 Fuel
Injector 1 Circuit P0202 Fuel Injector 2 Circuit P0203 Fuel
Injector 3 Circuit P0204 Fuel Injector 4 Circuit P0205 Fuel
Injector 5 Circuit P0206 Fuel Injector 6 Circuit P0461 Fuel
Level Sensor 1 Performance P0462 Fuel Level Sensor 1 Circuit
Low P0463 Fuel Level Sensor 1 Circuit High P0522 Engine Oil
Pressure Too Low P0627 Fuel Pump Control Circuit P0944 Loss
Of Hydraulic Pump Prime P1128 Closed Loop Fueling Not
Achieved - Bank 1 P1129 Closed Loop Fueling Not Achieved -
Bank 2 P2096 Downstream Fuel Trim System 1 Lean P2097
Downstream Fuel Trim System 1 Rich P2098 Downstream Fuel
Trim System 2 Lean P2099 Downstream Fuel Trim System 2 Rich

[ Misfire ]

P0300  Multiple Cylinder Misfire
P0301  Cylinder 1 Misfire
P0302  Cylinder 2 Misfire
P0303  Cylinder 3 Misfire
P0304  Cylinder 4 Misfire
P0305  Cylinder 5 Misfire
P0306  Cylinder 6 Misfire

[ Ignition coils ]

P2302  Ignition Coil 1 Secondary Circuit - Insufficient Ionization
P2305  Ignition Coil 2 Secondary Circuit - Insufficient Ionization
P2308  Ignition Coil 3 Secondary Circuit - Insufficient Ionization

[ Emission control - EGR / EVAP / catalyst ]

P0401 EGR System Performance P0403 EGR Solenoid Circuit
P0404 EGR Position Sensor Rationality Open P0405 EGR
Position Sensor Circuit Low P0406 EGR Position Sensor
Circuit High P1404 EGR Position Sensor Rationality Closed
P0420 Catalyst Efficiency (Bank 1) P0430 Catalyst Efficiency
(Bank 2) P0440 General EVAP System Failure P0441 EVAP Purge
System Performance P0443 EVAP Purge Solenoid Circuit P0452
EVAP Pressure Switch Stuck Closed P0455 EVAP Purge System
Large Leak P0456 EVAP Purge System Small Leak P0457 Loose
Fuel Cap

[ Air metering - Airflow / vacuum ]

P2072 Electronic Throttle Control System - Ice Blockage
P2172 High Airflow / Vacuum Leak Detected (Instantaneous
Accumulation) P2173 High Airflow / Vacuum Leak Detected
(Slow Accumulation) P2174 Low Airflow / Restriction Detected
(Instantaneous Accumulation) P2175 Low Airflow / Restriction
Detected (Slow Accumulation)

[ A/C system ]

P0532 A/C Pressure Sensor Circuit Low P0533 A/C Pressure
Sensor Circuit High P0645 A/C Clutch Control Circuit P1273
A/C Clutch Control Circuit 2 High (TIPM) P1275 A/C Clutch
Control Circuit 2 Overcurrent (TIPM)

[ Speed / idle / brake / cruise ]

P0501 Vehicle Speed Sensor 1 Performance P0503 Vehicle Speed
Sensor 1 Erratic P0506 Idle Speed Performance Lower Than
Expected P0507 Idle Speed Performance Higher Than Expected
P050B Cold Start Ignition Timing Performance P050D Cold
Start Rough Idle P0571 Brake Switch 1 Performance P0572
Brake Switch 1 Stuck On P0573 Brake Switch 1 Stuck Off P0579
Speed Control Switch 1 Performance P0580 Speed Control
Switch 1 Circuit Low P0581 Speed Control Switch 1 Circuit
High P0585 Speed Control Switch 1/2 Correlation P0591 Speed
Control Switch 2 Performance P0592 Speed Control Switch 2
Circuit Low P0593 Speed Control Switch 2 Circuit High P0703
Brake Switch 2 Performance P0726 Engine Speed Input Circuit
Range / Performance P1501 Vehicle Speed Sensor 1/2
Correlation - Drive Wheels P1502 Vehicle Speed Sensor 1/2
Correlation - Non Drive Wheels P1572 Brake Pedal Stuck On
P1573 Brake Pedal Stuck Off P1593 Speed Control Switch 1/2
Stuck P2161 Vehicle Speed Sensor 2 Erratic P2299 Brake Pedal
Position / Accelerator Pedal Position Incompatible

[ Electronic Throttle Control (ETC) ]

P2100 Electronic Throttle Control Motor Circuit P2101
Electronic Throttle Control Motor Performance P2107
Electronic Throttle Control Module Processor P2110
Electronic Throttle Control - Forced Limited RPM P2111
Electronic Throttle Control - Unable To Close P2112
Electronic Throttle Control - Unable To Open P2115
Accelerator Pedal Position Sensor 1 Minimum Stop Performance
P2116 Accelerator Pedal Position Sensor 2 Minimum Stop
Performance P2118 Electronic Throttle Control Motor Current
Performance P2122 Accelerator Pedal Position Sensor 1
Circuit Low P2123 Accelerator Pedal Position Sensor 1
Circuit High P2127 Accelerator Pedal Position Sensor 2
Circuit Low P2128 Accelerator Pedal Position Sensor 2
Circuit High P2135 Throttle Position Sensor 1/2 Correlation
P2138 Accelerator Pedal Position Sensor 1/2 Correlation
P2166 Accelerator Pedal Position Sensor 1 Maximum Stop
Performance P2167 Accelerator Pedal Position Sensor 2
Maximum Stop Performance P060B ETC A/D Ground Performance
P060D ETC Level 2 APP Performance P060E ETC Level 2 TPS
Performance P060F ETC Level 2 ECT Performance P061A ETC
Level 2 Torque Performance P061C ETC Level 2 RPM Performance
P062C ETC Level 2 MPH Performance

[ Battery / charging system ]

P0562  Battery Voltage Low
P0563  Battery Voltage High
P0622  Generator Field Control Circuit
P063A  Generator Voltage Sense Circuit
P2503  Charging System Output Low
P2504  Charging System Output High

[ Module internal / sensor reference voltage ]

P0600 Serial Communication Link P0601 Internal Memory
Checksum Invalid P0602 Control Module Programming Error /
Not Programmed P0604 Internal Control Module RAM P0605
Internal Control Module ROM P0606 Internal ECM Processor
P0613 Internal Transmission Processor P0630 VIN Not
Programmed In PCM P0632 Odometer Not Programmed In PCM P0633
SKIM Secret Key Not Stored In PCM P0642 Sensor Reference
Voltage 1 Circuit Low P0643 Sensor Reference Voltage 1
Circuit High P0652 Sensor Reference Voltage 2 Circuit Low
P0653 Sensor Reference Voltage 2 Circuit High P0685 Auto
Shutdown Control Circuit P0688 Auto Shutdown Sense Circuit
Low P1602 PCM Not Programmed P1607 PCM Internal Shutdown
Timer Rationality Too Slow P1618 Sensor Reference Voltage 1
Circuit Erratic P1628 Sensor Reference Voltage 2 Circuit
Erratic P1684 Battery Was Disconnected P1696 EEPROM Memory
Write Denied / Invalid P1697 EMR (SRI) Mileage Not Stored
P2610 PCM Internal Shutdown Timer Rationality Too Fast P0513
Invalid SKIM Key

[ Transmission - General / range / speed sensors ]

P0700  Transmission Control System (MIL Request)
P0706  Transmission Range Sensor Rationality
P0711  Transmission Temperature Sensor Performance
P0712  Transmission Temperature Sensor Low
P0713  Transmission Temperature Sensor High
P0714  Transmission Temperature Sensor Intermittent
P0716  Input Speed Sensor 1 Circuit Performance
P0721  Output Speed Sensor Circuit Performance

[ Transmission - Gear ratios / solenoids ]

P0731  Gear Ratio Error In 1st
P0732  Gear Ratio Error In 2nd
P0733  Gear Ratio Error In 3rd
P0734  Gear Ratio Error In 4th
P0736  Gear Ratio Error In Reverse
P0740  TCC Out Of Range
P0750  LR Solenoid Circuit
P0755  2/4 Solenoid Circuit
P0760  OD Solenoid Circuit
P0765  UD Solenoid Circuit

[ Transmission - Pressure switches / line pressure ]

P0841 LR Pressure Switch Rationality P0845 2/4 Hydraulic
Pressure Test P0846 2/4 Pressure Switch Rationality P0868
Line Pressure Low P0869 Line Pressure High P0870 OD
Hydraulic Pressure Test P0871 OD Pressure Switch Rationality
P0933 Line Pressure Sensor Circuit Performance P0934 Line
Pressure Sensor Circuit Low P0935 Line Pressure Sensor
Circuit High P0992 2/4/OD Hydraulic Pressure Test P1745
Transmission Line Pressure Too High For Too Long

[ Transmission - PRNDL / TCM / relay / power ]

P0850 Park / Neutral Switch Performance P0853 Overdrive /
Tow Switch Input Circuit Stuck P0882 TCM Power Input Low
P0883 TCM Power Input High P0884 Power Up At Speed P0888
Transmission Relay Always Off P0890 Switched Battery P0891
Transmission Relay Always On P0897 Transmission Fluid
Deteriorated P128B TCM Power Control Circuit 2 Low - TIPM
P128C TCM Power Control Circuit 2 High - TIPM P128D TCM
Power Control Circuit 2 Open - TIPM P128E TCM Power Control
Circuit 2 Overcurrent - TIPM P129C Inverter Control Circuit
High (TIPM) P129E Inverter Control Circuit Overcurrent
(TIPM) P1713 Restricted Manual Valve In T2 Range P1775
Solenoid Switch Valve Latched In TCC Position P1776 Solenoid
Switch Valve Latched In LR Position P1790 Fault Immediately
After Shift P1794 Speed Sensor Ground Error P1797 Manual
Shift Overheat P1897 Level 1 RPM Bus Unlock

[ Bus health / faults ]

U0001 CAN C Bus / Circuit U0002 CAN C Bus Off Performance
U0010 CAN Interior Bus U0011 CAN Interior Bus Off
Performance U0019 CAN Interior Bus(+)/(-) Circuit U0020 CAN
Interior Bus Off Performance U1008 LIN 1 Bus

[ Lost communication - Powertrain / chassis modules ]

U0100 Lost Communication With ECM / PCM U0101 Lost
Communication With TCM U0114 Lost Communication With Final
Drive Control Module U0121 Lost Communication With Anti-Lock
Brake System (ABS) Control Module U0126 Lost Communication
With SAS - CAN C (Steering Angle Sensor) U0141 Lost
Communication With Front Control Module (TIPM) U0146 Lost
Communication With Central Gateway

[ Lost communication - Restraint / occupant / cluster ]

U0151 Lost Communication With Occupant Restraint Controller
(ORC) U0154 Lost Communication With Occupant Classification
Module U0155 Lost Communication With Cluster / CCN (SKREEM)
U0161 Lost Communication With Compass Module U0167 Lost
Communication With Intrusion Transceiver Control Module
U0168 Lost Communication With Vehicle Security Control
Module (SKREEM / WCM) U0170 Lost Communication With Up-Front
Left Satellite Acceleration Sensor U0171 Lost Communication
With Up-Front Right Satellite Acceleration Sensor U0172 Lost
Communication With Left Side Satellite Acceleration Sensor 1
U0175 Lost Communication With Right Side Satellite
Acceleration Sensor 1

[ Lost communication - HVAC / audio / phone ]

U0164 Lost Communication With HVAC Control Module U0184 Lost
Communication With Radio U0186 Lost Communication With Audio
Amplifier U0193 Lost Communication With Traffic Information
Receiver Module U0195 Lost Communication With SDARS
(Satellite Digital Audio Receiver) U0197 Lost Communication
With Hands Free Phone Module

[ Lost communication - Doors ]

U0199  Lost Communication With Driver's Door Module
U0200  Lost Communication With Passenger Door Module

[ Implausible data ]

U0415 Implausible Data Received From ABS U0447 Implausible
Data Received From Central Gateway U110A Lost Communication
With SCM U110C Lost Fuel Level Message U110D Lost
Communication With Security Siren U110E Lost Ambient
Temperature Message U110F Lost Fuel Volume Message U1110
Lost Vehicle Speed Message U1113 Lost A/C Pressure Message
U1120 Lost Wheel Distance Message U113B Lost Communication
With Switch Bank Module U1149 Lost Communication With
Multifunction U1159 Lost Communication With ASBS U1169 Lost
Communication With Intrusion Sensor 1 U1170 Lost
Communication With Intrusion Sensor 2 U1179 Lost
Communication With Intrusion Sensor 3 U1403 Implausible Fuel
Level Signal Received U1411 Implausible Fuel Volume Signal
Received U1412 Implausible Vehicle Speed Signal Received
U1414 Implausible / Missing ECU Network Configuration Data
U1415 Implausible / Missing Vehicle Configuration Data U1416
Implausible Security Siren Signal Received U1417 Implausible
Left Wheel Distance Signal Received U1418 Implausible Right
Wheel Distance Signal U1419 Implausible Data Received From
OCS Sensor 3 - Left Front U141A Implausible Data Received
From OCS Sensor 2 - Right Front U141B Implausible Data
Received From OCS Sensor 4 - Left Rear U141C Implausible
Data Received From OCS Sensor 1 - Right Rear

Platform: Jeep JK Wrangler (2007-2018).

What transfers to other platforms:  P0xxx codes are SAE
J2012 standardised and apply universally to every
OBD-II-compliant vehicle since the late 1990s.  Most of the
P-codes in this catalog (engine sensors, O2 readings,
misfires, EVAP, EGR, catalyst efficiency, basic
transmission) will give the same description on a JL
Wrangler, JT Gladiator, Grand Cherokee, Ram, Chrysler 300,
Dodge Charger, or any other 2007+ FCA / Stellantis vehicle.
Manufacturer-specific P1xxx codes are FCA-defined; they
often transfer across the FCA lineup but with
platform-specific wiring / module differences.

What is JK-specific:  Bxxxx (body), Cxxxx (chassis), and
Uxxxx (network) codes are mostly defined by the body
controller (TIPM / CCN / BCM) and vary by platform.  Same
letter-code may mean a different fault on a JL or a Grand
Cherokee.  Use this catalog as a starting point on those
platforms, but verify against the vehicle's actual service
info.

What is missing:  This list is community-compiled and
incomplete.  Some less-common P-codes (especially
diesel-specific EcoDiesel codes on JK 2014-2018) and rare
body-domain codes are not here.  See the references section
below for upstream sources to cross-check uncertain
readings.

For wire-format decoding
(how the 2-byte response from Service 0x03 maps to a
5-character DTC string) and the Type A / Type B / Permanent
severity-classification explanation, see BMR § DTC anatomy.

Upstream sources used to compile this catalog:

  — Community-shared JK Wrangler DTC list, originally sourced
    from a Chrysler / Jeep EOBD code reference distributed on
    Scribd
    (Codigos EOBD CHRYSLER / JEEP).
  — All Jeep OBD2 Trouble Codes List (SlideShare / OBDCodex)
    -- broader generic-Jeep catalog (~700 codes / 468 slides) with
    heavy ISO/SAE Reserved placeholder coverage and airbag
    deployment subfault detail.  No model attribution, so the
    incremental value over this JK-specific list is mostly the
    extended SRS / airbag code definitions.
  — SAE J2012 (Diagnostic Trouble Code Definitions) -- the
    authoritative reference for the standardised P0xxx range.
  — obd-codes.com
    -- searchable lookup with extended descriptions, fix
    procedures, and severity notes for each code.
  — Manufacturer-specific shop manuals (FCA / Stellantis
    wiTECH-distributed) cover P1xxx / Bxxxx / Cxxxx / Uxxxx
    definitions authoritatively but are not publicly accessible.

This list is a STARTING POINT, not a service manual.  Codes with
ambiguous descriptions (e.g. B1644 has at least two documented
meanings depending on vehicle config) are flagged inline above.