A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Diagnostic Trouble Code Descriptions
- FD or Undocumented Codes
- Code to Test Chart
- P Codes
- 2 and 3 Digit Codes
- Brief Descriptions
- Code Descriptions & Possible Causes
- 11 Intermittent Loss of CMP or CKP
- 11 No Crank Reference Signal at PCM
- 11 Timing Belt Skipped 1 Tooth or More
- 13 No Change In MAP From Start to Run
- 14 MAP Sensor Voltage
- 15 No Vehicle Speed Sensor Signal
- 17 Closed Loop Temp Not Reached
- 21 Downstream O2 Sensor Heater Failure
- 21 Downstream O2 Sensor Shorted to Ground
- 21 Downstream O2 Sensor Shorted to Voltage
- 21 Downstream O2 Sensor Slow Response
- 21 Downstream O2 Sensor Stays at Center
- 21 Upstream O2 Sensor Heater Failure
- 21 Upstream O2 Sensor Shorted to Ground
- 21 Upstream O2 Sensor Shorted to Voltage
- 21 Upstream O2 Sensor Slow Response
- 21 Upstream O2 Sensor Stays at Center
- 22 ECT Sensor Voltage Too High
- 22 ECT Sensor Voltage Too Low
- 23 Intake Air Temp Sensor
- 24 Throttle Position Sensor Failures
- 25 Idle Air Control Motor Circuits
- 25 Target Idle Not Reached (+/- 200 RPM)
- 25 Vacuum Leak Found (IAC Fully Seated)
- 27 Injector Control Circuit
- 31 EVAP Purge Flow Monitor Failure
- 31 EVAP Purge Solenoid Circuit
- 32 EGR Solenoid Circuit
- 32 EGR System Failure
- 33 A/C Clutch Relay Circuit
- 33 No 5 Volts to A/C Pressure Sensor
- 34 Speed Control Solenoid/Switch Failures
- 35 High Speed Fan Control Relay Circuit
- 35 Low Speed Fan Control Relay Circuit
- 35 No Vehicle Speed Sensor Signal
- 35 No 5 Volts to A/C Pressure Sensor
- 35 Rad Fan Control Relay Circuit
- 36 Low Secondary Air Flow -- Manual Transmission Only
- 36 MAP Sensor Voltage Too Low
- 36 Secondary Air Solenoid -- Manual Transmissions Only
- 37 MAP Sensor Voltage Too High
- 37 Park/Neutral Switch Failure
- 37 Torque Converter Clutch Failures
- 39 No Change In MAP From Start to Run
- 41 Generator Field Not Switching Properly
- 42 Auto Shutdown Relay Control Circuit
- 42 Fuel Pump Relay Control Circuit
- 42 No ASD Relay Output Voltage at PCM
- 43 Cylinder #1. #2. #3. #4 Misfire
- 43 Ignition Coil Primary Circuit
- 43 Multiple Cylinder Misfire
- 44 Battery Temp Sensor Voltage Out of Limit
- 46 Charging System Voltage Too High
- 47 Charging System Voltage Too Low
- 51 Fuel System Lean (OBDII Only)
- 51 O2S Stays Above Center (Rich)
- 52 Fuel System Rich (OBDII Only)
- 52 O2S Stays Below Center (Lean)
- 53 Internal Controller Failure
- 53 PCM Failure SPI Communications
- 54 No Cam Signal at PCM
- 62 PCM Failure SRI Mile Not Stored
- 63 PCM Failure EEPROM Write Denied
- 64 Catalytic Converter Efficiency Failure
- 65 Power Steering Switch Failure
- 66 No CCD Message From Body Control Module
- 66 No CCD Messages From TCM
- 71 +5 Volt Supply Output Too Low
- 77 Speed Control Power Relay Circuit
- 135 No 5 Volts to MAP Sensor
- 157 Timing Reference Signals
- Scan Tool Text Codes
- A/C Clutch Relay Circuit
- Auto Shutdown (ASD) Relay Control Circuit
- Battery Temp Sensor Voltage Out of Limit
- Catalytic Converter Efficiency Failure
- Charging System Voltage Too High
- Charging System Voltage Too Low
- Closed Loop Temp Not Reached
- Cylinder #1. #2. #3. #4 Misfire
- Downstream O2 Sensor Heater Failure
- Downstream O2 Sensor Shorted to Ground
- Downstream O2 Sensor Shorted to Voltage
- Downstream O2 Sensor Slow Response
- Downstream O2 Sensor Stays at Center
- ECT Sensor Voltage Too High
- ECT Sensor Voltage Too Low
- EGR Solenoid Circuit
- EGR System Failure
- EVAP Purge Flow Monitor Failure
- EVAP Purge Solenoid Circuit
- Fuel Level Sending Unit Voltage Too High
- Fuel Level Sending Unit Voltage Too Low
- Fuel Level Unit No Change Over Miles
- Fuel Pump Relay Control Circuit
- Fuel System Lean
- Fuel System Rich
- Generator Field Not Switching Properly
- High Speed Fan Control Relay Circuit
- Idle Air Control Motor Circuits
- Ignition Coil Primary Circuit
- Injector Control Circuit
- Intake Air Temp Sensor Voltage High
- Intake Air Temp Sensor Voltage Low
- Intermittent Loss of CMP or CKP
- Internal Controller Failure
- Low Secondary Air Flow -- Manual Transmission Only
- Low Speed Fan Control Relay Circuit
- MAP Sensor Voltage Too High
- MAP Sensor Voltage Too Low
- Multiple Cylinder Misfire
- No ASD Relay Output Voltage At PCM
- No Cam Signal at PCM
- No CCD Message From Body Control Module
- No CCD Message From TCM
- No Change In MAP From Start to Run
- No Crank Reference Signal at PCM
- No Vehicle Speed Sensor Signal
- No 5 Volts to A/C Pressure Sensor
- No 5 Volts to MAP Sensor
- No 5 Volts to TP Sensor
- O2S Stays Above Center (Rich)
- O2S Stays Below Center (Lean)
- Park/Neutral Switch Failure
- PCM Failure EEPROM Write Denied
- PCM Failure SPI Communications
- PCM Failure SRI Mile Not Stored
- Power Steering Switch Failure
- Radiator Fan Relay Control Circuit
- Secondary Air Solenoid -- Manual Transmissions Only
- Speed Control Power Relay Circuit
- Speed Control Solenoid Circuits
- Speed Control Switch Always High
- Speed Control Switch Always Low
- Target Idle Not Reached (+/- 200 RPM)
- Throttle Position Sensor Voltage High
- Throttle Position Sensor Voltage Low
- Timing Belt Skipped 1 Tooth or More
- Torque Converter Clutch Solenoid Circuit
- Torque Converter Clutch, No RPM Drop at Lockup
- TPS Voltage Does Not Agree With MAP
- Upstream O2 Sensor Heater Failure
- Upstream O2 Sensor Shorted to Ground
- Upstream O2 Sensor Shorted to Voltage
- Upstream O2 Sensor Slow Response
- Upstream O2 Sensor Stays at Center
- Vacuum Leak Found (Idle Air Control Motor Fully Seated)
- 5 Volt Supply Output Too Low
- Detailed Descriptions
- P Code Charts
- Manufacturer Code Charts
- Diagnostic Notes (Read Before Proceding)
- FD or Undocumented Codes
- Code to Test Chart
- Trouble Code (TC) Tests
- DTC Test - CODE TO TC TEST CHART (Checking for Trouble Codes)
- TC-1A No Cam Signal at PCM
- TC-3A O2 Sensor Stays Below Center (Lean)
- TC-4A O2 Sensor Stays Above Center (Rich)
- TC-5A Charging System Voltage Low
- TC-6A Charging System Voltage High
- TC-6B Charging System Voltage High
- TC-10A Auto Shutdown (ASD) Relay Control Circuit
- TC-11A Generator Field Not Switching Properly
- TC-12A Torque Converter Clutch Solenoid Circuit
- TC-14A RAD Fan Control Relay Circuit
- TC-15A Speed Control Relay, 12V Driver Circuit, Solenoid CKTs
- TC-15B Speed Control Relay, or 12V Driver & Solenoid Ckts
- TC-15C Speed Control Relay, 12V Driver Circuit, Solenoid Ckts
- TC-16A A/C Clutch Relay Circuit
- TC-17A EGR Solenoid Circuit
- TC-18A EVAP Purge Solenoid Circuit
- TC-19A Injector #3 Control Circuit
- TC-20A Injector #2 Control Circuit
- TC-21A Injector Control Circuits
- TC-21B Injector #1 Control Circuit
- TC-25A Idle Air Control Motor Circuits
- TC-25B Idle Air Control Motor Circuits
- TC-25C Idle Air Control Motor Circuits
- TC-25D Idle Air Control Motor Circuits
- TC-25E Idle Air Control Motor Circuits
- TC-26A Throttle Position Sensor Voltage Low
- TC-27A Throttle Position Sensor Voltage High
- TC-30A ECT Sensor Voltage Too Low
- TC-31A ECT Sensor Voltage Too High
- TC-32A Upstream O2 Sensor Voltage Stays at Center
- TC-35A No Vehicle Speed Sensor Signal
- TC-35B No Vehicle Speed Sensor Signal
- TC-35C No Vehicle Speed Sensor Signal
- TC-36A MAP Sensor Voltage Too Low
- TC-37A MAP Sensor Voltage Too High
- TC-39A No Change In MAP From Start to Run
- TC-40A No Crank Reference Signal At PCM
- TC-40B No Crank Reference Signal At PCM
- TC-42A Ignition Coil #2 Primary Circuit
- TC-43A Ignition Coil #1 Primary Circuit
- TC-44A No ASD Relay Output Voltage at PCM
- TC-46A EGR System Failure
- TC-48A PCM Failure EEPROM Write Denied/SRI Mile Not Stored
- TC-57A Intake Air Temp Sensor Voltage Low
- TC-58A Intake Air Temp Sensor Voltage High
- TC-59A Knock Sensor Circuit
- TC-61A Injector #4 Control Circuit
- TC-62A Upstream O2 Sensor Shorted to Voltage
- TC-71A Battery Temp Sensor Volts Out of Limit
- TC-71B Battery Temp Sensor Volts Out of Limit
- TC-71C Battery Temp Sensor Volts Out of Limit
- TC-86A Speed Control Switch Always High
- TC-86B Speed Control Switch Always High
- TC-87A Speed Control Switch Always Low
- TC-92A Low Speed Fan Relay Control Circuit
- TC-93A High Speed Fan Relay Control Circuit
- TC-96A No CCD Messages From TCM
- TC-101A Fuel Pump Relay Control Circuit
- TC-102A Upstream O2 Sensor Slow Response
- TC-103A Upstream O2 Sensor Heater Failure
- TC-104A Downstream O2 Sensor Slow Response
- TC-105A Downstream O2 Sensor Heater Failure
- TC-106A Multiple Cylinder Misfire
- TC-107A Cylinder #1, #2, #3, #4 Misfire
- TC-112A Catalytic Converter Efficiency Failure
- TC-113A EVAP Purge Flow Monitor Failure
- TC-113B EVAP Purge Flow Monitor Failure
- TC-114A Park Neutral Switch Failure
- TC-115A Power Steering Switch Failure
- TC-115B Power Steering Switch Failure
- TC-118A Fuel System Rich
- TC-119A Fuel System Lean
- TC-126A Downstream O2 Sensor Shorted to Voltage
- TC-128A Closed Loop Temp Not Reached
- TC-132A TPS Voltage Does Not Agree With MAP
- TC-133A Timing Belt Skipped One Tooth or More
- TC-138A Target Idle Not Reached
- TC-138B Target Idle Not Reached
- TC-145A Vacuum Leak Found (IAC Fully Seated)
- TC-146B 5 Volt Supply Output Too Low
- TC-148A Torque Converter Clutch, No RPM Drop at Lockup
- TC-149A Fuel Level Sending Unit Volts Too Low
- TC-149B Fuel Level Sending Unit Volts Too Low
- TC-149C Fuel Level Sending Unit Volts Too Low
- TC-150A Fuel Level Sending Unit Volts Too High
- TC-150B Fuel Level Sending Unit Volts Too High
- TC-150C Fuel Level Sending Unit Volts Too High
- TC-151A Fuel Level Unit No Change Over Miles
- TC-151B Fuel Level Unit No Change Over Miles
- TC-151C Fuel Level Unit No Change Over Miles
- TC-152A Brake Switch Sense Circuit
- TC-157A Intermittent Loss of CMP or CKP
- TC-157B Intermittent Loss of CMP or CKP
- TC-157C Intermittent Loss of CMP or CKP
- Airbag System
- 1A Testing System Function
- 2A Repairing A Blank Scan Tool Screen
- 3A Loss of Ignition Run Only
- 3J Loss of Ignition Run Only
- 4A Two Front Sensors Circuit Open
- 5A Driver Squib Circuit Open
- 6A Passenger Squib Circuit Open
- 7A Driver Squib Circuit Shorted
- 8A Passenger Squib Circuit Shorted
- 10A Front Sensor Circuit Shorted
- 11A One Front Sensor Circuit Open
- 11B One Front Sensor Circuit Open
- 13A No CCD Communications
- 14A Repairing A "No Response" Condition
- 14B Repairing A "No Response" Condition
- 15A ACM Replacement Procedure
- 20A Pass Squib Term Shorted to Ground
- 24A Repairing A "No Response" or Communication Problem
- 24B Repairing A "No Response" or Communication Problem
- 27A Intermittent Trouble Codes
- 28A Seat Belt Pretensioner Circuit Open
- 29A Seat Belt Pretensioner Circuit Shorted
- 30A Seat Belt Pretensioner Circuit Shorted to Battery
- 31A Seat Belt Pretensioner Circuit Shorted to Ground
- Antilock Brakes / Traction Control Systems
- Test 1A - Checking For Diagnostic Trouble Codes
- Test 2A - Modulator Circuits
- Test 2B - Modulator Circuits
- Test 2C - L/F Decay Solenoid Control Circuit
- Test 2D - R/F Decay Solenoid Control Circuit
- Test 2E - L/R Decay Solenoid Control Circuit
- Test 2F - R/R Decay Solenoid Control Circuit
- Test 3 - System Relay Circuit
- Test 4 - Pump/Motor Circuit
- Test 5A - Solenoid Undervoltage Fault
- Test 6A - ABS Warning Lamp Diode Circuit
- Test 7 - ABS Warning Lamp Circuit
- Test 8A - Excess Decay
- Test 9 - Right Rear Wheel Speed Sensor
- Test 10 - Left Rear Wheel Speed Sensor
- Test 10A - Left Rear Wheel Speed Sensor
- Test 11A - Right Front Wheel Speed Sensor
- Test 11B - Right Front Wheel Speed Sensor
- Test 12A - Left Front Wheel Speed Sensor
- Test 12B - Left Front Wheel Speed Sensor
- Test 13A - Right Rear Wheel Speed Sensor
- Test 14A - Left Rear Wheel Speed Sensor
- Test 15A - Right Front Wheel Speed Sensor Continuity Fault
- Test 16A - Left Front Wheel Speed Sensor Continuity Fault
- Test 17A - DRB "No Response" Message
- Test 18A - DRB Blank Screen
- Test 19A - Checking Brake Lamp Switch Input to CAB
- Test 20A - Controller Enable
- Test 21A - Left Front Solenoid Circuit
- Test 22A - Right Rear Solenoid Circuit
- Test 23A - Left Rear Solenoid Circuit
- Test 24A - Right Front Solenoid Circuit
- Test 25A - System Relay Ground Circuit
- Test 26A - System Relay Control Circuit
- Test 27A - System Relay Output Circuit
- Test 27B - System Relay Output Circuit
- Test 28 - Intermittent Wheel Speed Sensor Circuits
- Test 29A - Wheel Speed Sensor Speed Comparison
- Test 30A - CAB Sensor Circuits
- Test 31A - CAB Malfunction
- Test 32A - Red Brake Warning Lamp Stays Illuminated
- Charging System (CH) Tests
- Coolant Temperature Sensor/Switch (For Computer)
- Speed Control (SC) Tests
- SC-1A Checking Speed Control Operation
- SC-1A Speed Control Operation Inspection
- SC-1B Checking Speed Control Operation
- SC-1B Speed Control Operation Inspection
- SC-2A Checking Speed Control On/Off Switch
- SC-2A Checking Speed Control ON/OFF Switch
- SC-3A Brake Switch Sense Inspection
- SC-3A Checking the Brake Switch Sense
- SC-4A Checking Park/Neutral Position Switch
- SC-4A Checking the Park/Neutral Position Switch
- SC-5A Checking For a Speed Control Denied Message
- SC-5A Checking Speed Control Denied Message
- SC-6A Speed Control Operation Inspection
- SC-6B Speed Control Operation Inspection
- SC-6C Speed Control Operation Inspection
- SC-7A Speed Control On/Off Switch Inspection
- SC-8A Checking the Speed Control Brake Switch Output
- SC-8A Speed Control Brake Switch Output Inspection
- SC-9A Park/Neutral Position Switch Inspection
- SC-10A Speed Control Relay Output Inspection
- Vehicle Communication Tests
- 1A Bus Failure Messages
- 2A Repairing A DRB Blank Screen
- 3A Ram Error
- 4A Cartridge Failure Error
- 5A Key Pad Failure
- 6A Testing For A Low or High Battery
- 7A Short to Battery Failure
- 7B Short to Battery Failure
- 7C Short to Battery Failure
- 7D Short to Battery Failure
- 7E Short to Battery Failure
- 7H Short to Battery Failure
- 8A Short to 5 Volts Failure
- 8B Short to 5 Volts Failure
- 8F Short to 5 Volts Failure
- 8G Short to 5 Volts Failure
- 8H Short to 5 Volts Failure
- 8J Short to 5 Volts Failure
- 9A Short to Ground Failure
- 9B Short to Ground Failure
- 10A Bus (+) and Bus (-) Shorted Together Failure
- 11A No Termination Failure
- 12A Bus Bias Level or Bus (+/-) Open Failure
- 12G Bus Bias Level or Bus (+/-) Open Failure
- 13A No Bus Bias Failure
- 14A Not Receiving Bus Messages Correctly Failure
- Verification Tests
- Charging System Verification Tests
- Verification Test VER-1A - ABS
- Verification Test VER-1A - Air Bag
- Verification Test VER-1A - Information Bus
- Verification Test VER-1A - No Start Verification Test
- Verification Test VER-2A - (Road Test) - ABS
- Verification Test VER-2A - Road Test Verification
- Verification Test VER-3A - Charging System Verification
- Verification Test VER-4A - Speed Control Verification Test
- Verification Test VER-5A - Road Test For OBD-II Trouble Codes
- Diagnostic Trouble Code Descriptions