P04XX Auxiliary Emission Controls
P0400 Exhaust Gas Recirculation Flow
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
P0402 Exhaust Gas Recirculation Flow Excessive Detected
P0403 Exhaust Gas Recirculation Control Circuit
P0404 Exhaust Gas Recirculation Control Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor “A” Circuit Low
P0406 Exhaust Gas Recirculation Sensor “A” Circuit High
P0407 Exhaust Gas Recirculation Sensor “B” Circuit Low
P0408 Exhaust Gas Recirculation Sensor “B” Circuit High
P0409 Exhaust Gas Recirculation Sensor “A” Circuit
P0410 Secondary Air Injection System
P0411 Secondary Air Injection System Incorrect Flow Detected
P0412 Secondary Air Injection System Switching Valve “A” Circuit
P0413 Secondary Air Injection System Switching Valve “A” Circuit Open
P0414 Secondary Air Injection System Switching Valve “A” Circuit Shorted
P0415 Secondary Air Injection System Switching Valve “B” Circuit
P0416 Secondary Air Injection System Switching Valve “B’ Circuit Open
P0417 Secondary Air Injection System Switching Valve “B” Circuit Shorted
P0416 Secondary Air Injection System Relay “A” Circuit
P0419 Secondary Air injection System Relay “B” Circuit
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424 Heated Catalyst Temperature Below Threshold (Bank 1)
P0425 Catalyst Temperature Sensor (Bank 1)
P0426 Catalyst Temperature Sensor Range/Performance (Bank 1)
P0427 Catalyst Temperature Sensor Low Input (Bank 1)
P0428 Catalyst Temperature Sensor High Input (Bank 1)
P0429 Catalyst Heater Control Circuit (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)
P0434 Heated Catalyst Temperature Below Threshold (Bank 2)
P0435 Catalyst Temperature Sensor (Bank 2)
P0436 Catalyst Temperature Sensor Range/Performance (Bank 2)
P0437 Catalyst Temperature Sensor Low Input (Bank 2)
P0438 Catalyst Temperature Sensor High Input (Bank 2)
P0439 Catalyst Heater Control Circuit (Bank 2)
P0440 Evaporative Emission Control System
P0441 Evaporative Emission Control System Incorrect Purge Flow
P0442 Evaporative Emission Control System Leak Detected (small leak)
P0443 Evaporative Emission Control System Purge Control Valve Circuit
P0444 Evaporative Emission Control System Purge Control Valve Circuit Open
P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted
P0446 Evaporative Emission Control System Vent Control Circuit
P0447 Evaporative Emission Control System Vent Control Circuit Open
P0448 Evaporative Emission Control System Vent Control Circuit Shorted
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit
P0450 Evaporative Emission Control System Pressure Sensor
P0451 Evaporative Emission Control System Pressure Sensor Range/Performance
P0452 Evaporative Emission Control System Pressure Sensor Low Input
P0453 Evaporative Emission Control System Pressure Sensor High input
P0454 Evaporative Emission Control System Pressure Sensor Intermittent
P0455 Evaporative Emission Control System Leak Detected (gross leak)
P0456 Evaporative Emission Control System Leak Detected (very small leak)
P0457 Evaporative Emission Control System Leak Detected (fuel cap loose/off)
P0460 Fuel Level Sensor Circuit
P0461 Fuel Level Sensor Circuit Range/Performance
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0464 Fuel Level Sensor Circuit Intermittent
P0465 EVAP Purge Flow Sensor Circuit
P0466 EVAP Purge Flow Sensor Circuit Range/Performance
P0467 EVAP Purge Flow Sensor Circuit Low Input
P0468 EVAP Purge Flow Sensor Circuit High Input
P0469 EVAP Purge Flow Sensor Circuit Intermittent
P0470 Exhaust Pressure Sensor
P0471 Exhaust Pressure Sensor Range/Performance
P0472 Exhaust Pressure Sensor Low
P0473 Exhaust Pressure Sensor High
P0474 Exhaust Pressure Sensor Intermittent
P0475 Exhaust Pressure Control Valve
P0476 Exhaust Pressure Control Valve Range/Performance
P0477 Exhaust Pressure Control Valve Low
P0478 Exhaust Pressure Control Valve High
P0479 Exhaust Pressure Control Valve Intermittent
P0480 Cooling Fan 1 Control Circuit
P0481 Cooling Fan 2 Control Circuit
P0482 Cooling Fan 3 Control Circuit
P0483 Cooling Fan Rationality Check
P0484 Cooling Fan Circuit Over Current
P0485 Cooling Fan Power/Ground Circuit
P0486 Exhaust Gas Recirculation Sensor “B” Circuit
P0487 Exhaust Gas Recirculation Throttle Position Control Circuit
P0488 Exhaust Gas Recirculation Throttle Position Control Range/Performance
P0491 Secondary Air Injection System (Bank 1)
P0492 Secondary Air Injection System (Bank 2)
P05XX Vehicle Speed, Idle Control, and Auxiliary Inputs
P0500 Vehicle Speed Sensor
P0501 Vehicle Speed Sensor Range/Performance
P0502 Vehicle Speed Sensor Circuit Low Input
P0503 Vehicle Speed Sensor Intermittent/Erratic/High
P0505 Idle Control System
P0506 Idle Control System RPM Lower Than Expected
P0507 Idle Control System RPM Higher Than Expected
P0508 Idle Control System Circuit Low
P0509 Idle Control System Circuit High
P0510 Closed Throttle Position Switch
P0512 Starter Request Circuit
P0513 Incorrect Irnmobilizer Key (“Immobilizer pending SAE J1930 approval)
P0515 Battery Temperature Sensor Circuit
P0516 Battery Temperature Sensor Circuit Low
P0517 Battery Temperature Sensor Circuit High
P0520 Engine Oil Pressure Sensor/Switch Circuit
P0521 Engine Oil Pressure Sensor/Switch Range/Performance
P0522 Engine Oil Pressure Sensor/Switch Low Voltage
P0523 Engine Oil Pressure Sensor/Switch High Voltage
P0524 Engine Oil Pressure Too Low
P0530 A/C Refrigerant Pressure Sensor Circuit
P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance
P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
P0533 A/C Refrigerant Pressure Sensor Circuit High Input
P0534 Air Conditioner Refrigerant Charge Loss
P0540 Intake Air Heater Circuit
P0541 Intake Air Heater Circuit Low
P0542 Intake Air Heater Circuit High
P0544 Exhaust Gas Temperature Sensor Circuit (Bank 1)
P0545 Exhaust Gas Temperature Sensor Circuit Low (Bank 1)
P0546 Exhaust Gas Temperature Sensor Circuit High (Bank 1)
P0547 Exhaust Gas Temperature Sensor Circuit (Bank 2)
P0548 Exhaust Gas Temperature Sensor Circuit Low (Bank 2)
P0549 Exhaust Gas Temperature Sensor Circuit High (Bank 2)
P0550 Power Steering Pressure Sensor Circuit
P0551 Power Steering Pressure Sensor Circuit Range/Performance
P0552 Power Steering Pressure Sensor Circuit Low Input
P0553 Power Steering Pressure Sensor Circuit High Input
P0554 Power Steering Pressure Sensor Circuit Intermittent
P0560 System Voltage
P0561 System Voltage Unstable
P0562 System Voltage Low
P0563 System Voltage High
P0564 Cruise Control Multi-Function Input Signal
P0565 Cruise Control On Signal
P0566 Cruise Control Off Signal
P0567 Cruise Control Resume Signal
P0568 Cruise Control Set Signal
P0569 Cruise Control Coast Signal
P0570 Cruise Control Accel Signal
P0571 Cruise Control/Brake Switch A Circuit
P0572 Cruise Control/Brake Switch A Circuit Low
P0573 Cruise Control/Brake Switch A Circuit High
P0574 Cruise Control System - Vehicle Speed Too High
P0575 Cruise Control Input Circuit
P0576 Cruise Control Input Circuit Low
P0577 Cruise Control input Circuit High
P0578 through P0580 Reserved for Cruise Control Codes
P06XX Computer and Auxiliary Inputs
P0600 Serial Communication Link
P0601 Internal Control Module Memory Check Sum Error
P0602 Control Module Programming Error
P0603 Internal Control Module Keep Alive Memory (KAM) Error
P0604 Internal Control Module Random Access Memory (RAM) Error
P0605 Internal Control Module Read Only Memory (ROM) Error
P0606 ECM/PCM Processor
P0607 Control Module Performance
P0608 Control Module VSS Output “A”
P0609 Control Module VSS Output “B”
P0610 Control Module Vehicle Options Error
P0615 Starter Relay Circuit
P0616 Starter Relay Circuit Low
P0617 Starter Relay Circuit High
P0618 Alternative Fuel Control Module KAM Error
P0619 Alternative Fuel Control Module RAM/ROM Error
P0620 Generator Control Circuit
P0621 Generator Lamp “L” Terminal Control Circuit
P0622 Generator Field “F” Terminal Control Circuit
P0623 Generator Lamp Control Circuit
P0624 Fuel Cap Lamp Control Circuit
P0630 VIN Not Programmed or Mismatch - ECM/PCM
P0631 VIN Not Programmed or Mismatch - TCM
P0635 Power Steering Control Circuit
P0836 Power Steering Control Circuit Low
P0637 Power Steering Control Circuit High
P0638 Throttle Actuator Control Range/Performance (Bank 1)
P0639 Throttle Actuator Control Range/Performance (Bank 2)
P0640 Intake Air Heater Control Circuit
P0645 A/C Clutch Relay Control Circuit
P0646 A/C Clutch Relay Control Circuit Low
P0647 A/C Clutch Relay Control Circuit High
P0648 Immobilizer Lamp Control Circuit (“Immobilizer” pending SAE J1930 approval)
P0649 Speed Control Lamp Control Circuit
P0650 Malfunction Indicator Lamp (ML) Control Circuit
P0654 Engine RPM Output Circuit
P0655 Engine Hot Lamp Output Control Circuit
P0656 Fuel Level Output Circuit
P0660 Intake Manifold Tuning Valve Control Circuit (Bank 1)
P0661 Intake Manifold Tuning Valve Control Circuit Low (Bank 1)
P0662 Intake Manifold Tuning Valve Control Circuit High (Bank 1)
P0663 Intake Manifold Tuning Valve Control Circuit (Bank 2)
P0664 Intake Manifold Tuning Valve Control Circuit Low (Bank 2)
P0665 Intake Manifold Tuning Valve Control Circuit High (Bank 2)
P07XX Transmission
P0700 Transmission Control System (MIL Request)
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System Electrical
P0703 Torque Converter/Brake Switch B Circuit
P0704 Clutch Switch In put Circuit Malfunction
P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0706 Transmission Range Sensor Circuit Range/Performance
P0707 Transmission Range Sensor Circuit Low Input
P0708 Transmission Range Sensor Circuit High Input
P0709 Transmission Range Sensor Circuit intermittent
P0710 Transmission Fluid Temperature Sensor Circuit
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input
P0713 Transmission Fluid Temperature Sensor Circuit High Input
P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 Input/Turbine Speed Sensor Circuit
P0716 Input/Turbine Speed Sensor Circuit Range/Performance
P0717 Input/Turbine Speed Sensor Circuit No Signal
P0718 Input/Turbine Speed Sensor Circuit Intermittent
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Speed Sensor Circuit
P0721 Output Speed Sensor Circuit Range/Performance
P0722 Output Speed Sensor Circuit No Signal
P0723 Output Speed Sensor Circuit Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine Speed Input Circuit
P0726 Engine Speed Input Circuit Range/Performance
P0727 Engine Speed Input Circuit No Signal
P0728 Engine Speed Input Circuit Intermittent
P0730 Incorrect Gear Ratio
P0731 Gear 1 Incorrect Ratio
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0734 Gear 4 Incorrect Ratio
P0735 Gear 5 Incorrect Ratio
P0736 Reverse Incorrect Ratio
P0737 TCM Engine Speed Output Circuit
P0739 TCM Engine Speed Output Circuit Low
P0739 TCM Engine Speed Output Circuit High
P0740 Torque Converter Clutch Circuit
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Circuit Stuck On
P0743 Torque Converter Clutch Circuit Electrical
P0744 Torque Converter Clutch Circuit Intermittent
P0745 Pressure Control Solenoid “A”
P0746 Pressure Control Solenoid “A” Performance or Stuck Off
P0747 Pressure Control Solenoid “A” Stuck On
P0748 Pressure Control Solenoid “A” Electrical
P0749 Pressure Control Solenoid “A” Intermittent
P0750 Shift Solenoid “A”
P0751 Shift Solenoid “A” Performance or Stuck Off
P0752 Shift Solenoid “A” Stuck On
P0753 Shift Solenoid “A” Electrical
P0754 Shift Solenoid “A” Intermittent
P0765 Shift Solenoid “B”
P0756 Shift Solenoid “B” Performance or Stuck Off
P0757 Shift Solenoid “B” Stuck On
P0758 Shift Solenoid “B” Electrical
P0759 Shift Solenoid “B” Intermittent
P0760 Shift Solenoid “C”
P0761 Shift Solenoid “C” Performance or Stuck Off
P0762 Shift Solenoid “C” Stuck On
P0763 Shift Solenoid “C” Electrical
P0764 Shift Solenoid “C” Intermittent
P0765 Shift Solenoid “C”
P0766 Shift Solenoid “D” Performance or Stuck Off
P0767 Shift Solenoid “D” Stuck On
P0768 Shift Solenoid “D” Electrical
P0769 Shift Solenoid “D” Intermittent
P0770 Shift Solenoid “E”
P0771 Shift Solenoid “E” Performance or Stuck Off
P0772 Shift Solenoid “E” Stuck On
P0773 Shift Solenoid “E” Electrical
P0774 Shift Solenoid “E” Intermittent
P0775 Pressure Control Solenoid “B”
P0776 Pressure Control Solenoid “B” Performance or Stuck Off
P0777 Pressure Control Solenoid “B” Stuck On
P0778 Pressure Control Solenoid “B” Electrical
P0779 Pressure Control Solenoid “B” Intermittent
P0780 Shift
P0781 1-2 Shift
P0782 2-3 Shift
P0783 3-4 Shift
P0784 4-5 Shift
P0785 Shift/Timing Solenoid
P0786 Shift/Timing Solenoid Range/Performance
P0787 Shift/Timing Solenoid Low
P0788 Shift/Timing Solenoid High
P0789 Shift/Timing Solenoid Intermittent
P0790 Normal/Performance Switch Circuit
P0791 Intermediate Shaft Speed Sensor Circuit
P0792 Intermediate Shaft Speed Sensor Circuit Range/Performance
P0793 Intermediate Shaft Speed Sensor Circuit No Signal
P0794 Intermediate Shaft Speed Sensor Circuit Intermittent
P0795 Pressure Control Solenoid “C”
P0796 Pressure Control Solenoid “C” Performance or Stuck off
P0797 Pressure Control Solenoid “C” Stuck On
P0798 Pressure Control Solenoid “C” Electrical
P0799 Pressure Control Solenoid “C” Intermittent
P08XX Transmission
P0801 Reverse Inhibit Control Circuit
P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit
P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit
P0805 Clutch Position Sensor Circuit
P0806 Clutch Position Sensor Circuit Range/Performance
P0807 Clutch Position Sensor Circuit Low
P0808 Clutch Position Sensor Circuit High
P0809 Clutch Position Sensor Circuit Intermittent
P0810 Clutch Position Control Error
P0811 Excessive Clutch Slippage
P0812 Reverse Input Circuit
P0813 Reverse Output Circuit
P0814 Transmission Range Display Circuit
P0815 Upshift Switch Circuit
P0816 Downshift Switch Circuit
P0817 Starter Disable Circuit
P0818 Driveline Disconnect Switch Input Circuit
P0820 Gear Lever X-Y Position Sensor Circuit
P0821 Gear Lever X Position Circuit
P0822 Gear Lever Y Position Circuit
P0823 Gear Lever X Position Circuit Intermittent
P0824 Gear Lever Y Position Circuit Intermittent
P0825 Gear Lever Push-Pull Switch (Shift Anticipate)
P0830 Clutch Pedal Switch “A” Circuit
P0831 Clutch Pedal Switch “A” Circuit Low
P0832 Clutch Pedal Switch “A” Circuit High
P0833 Clutch Pedal Switch “B” Circuit
P0834 Clutch Pedal Switch “B” Circuit Low
P0835 Clutch Pedal Switch “B” Circuit High
P0836 Four Wheel Drive (4WD) Switch Circuit
P0837 Four Wheel Drive (4WD) Switch Circuit Range/Performance
P0838 Four Wheel Drive (4WD) Switch Circuit Low
P0839 Four Wheel Drive (4WD) Switch Circuit High
P0840 Transmission Fluid Pressure Sensor/Switch “A” Circuit
P0841 Transmission Fluid Pressure Sensor/Switch “A” Circuit Range/Performance
P0842 Transmission Fluid Pressure Sensor/Switch “A” Circuit Low
P0843 Transmission Fluid Pressure Sensor/Switch “A” Circuit High
P0844 Transmission Fluid Pressure Sensor/Switch “A” Circuit Intermittent
OBD 2 Fault Codes Reference Guide
P0845 Transmission Fluid Pressure Sensor/Switch “B” Circuit
P0846 Transmission Fluid Pressure Sensor/Switch “B” Circuit Range/Performance
P0847 Transmission Fluid Pressure Sensor/Switch “B” Circuit Low
P0848 Transmission Fluid Pressure Sensor/Switch “B” Circuit High
P0849 Transmission Fluid Pressure Sensor/Switch “B” Circuit Intermittent
P09XX Transmission
P1XXX Manufacturer Controlled
P10XX Fuel and Air Metering and Auxiliary Emission Controls
P11XX Fuel and Air Metering
P12XX Fuel and Air Metering
P13XX Ignition System or Misfire
P14XX Auxiliary Emission Controls
P15XX Vehicle Speed, Idle Control, and Auxiliary Inputs
P16XX Computer and Auxiliary Outputs
P17XX Transmission
P18XX Transmission
P19XX Transmission
P2XXX SAE Controlled DTCs
P20XX Fuel and Air Metering and Auxiliary Emission Controls
P21XX Fuel and Air Metering and Auxiliary Emission Controls
P22XX Fuel and Air Metering and Auxiliary Emission Controls
P23XX Ignition System or Misfire
P3XX Manufacturer Controlled and SAE Reserved
P30XX Fuel and Air Metering and Auxiliary Emission Controls
P31XX Fuel and Air Metering and Auxiliary Emission Controls
P32XX Fuel and Air Metering and Auxiliary Emission Controls
P33XX Ignition System Misfire