P06xx OBD-II Trouble Codes (Computer Output)
OBD2 Error Codes

P06xx OBD-II Trouble Codes (Computer Output)

04.10.2023 /

This list includes OBD-II diagnostic trouble codes (DTCs) P06xx. All of these codes start with P06 (for example, P0601, P0670, and so on). The first letter “P” indicates that these are transmission related codes, and the subsequent numbers “06” indicate that they are related to the computer output circuit. The codes below are considered generic as they apply to most makes and models of OBD-II compliant vehicles.

However, keep in mind that the specific diagnostic and repair steps may vary depending on the manufacturer and model. There are also thousands of other codes available on our website. To search for more specific codes, you can use the links provided or visit our forum for more information.

OBD-II DTCs - P0600-P0699 - Computer Output Circuit

The list of P06xx OBD-II Diagnostic Trouble Codes (DTCs) includes:

  • P0600: Serial Communication Failure
  • P0601: Internal control module memory checksum error
  • P0602: Control module programming error
  • P0603: Control module (KAM) internal memory error
  • P0604: Internal control module random access memory (RAM) error
  • P0605: Internal read-only control module (ROM) error
  • P0606: PCM processor malfunction
  • P0607: Control Module Performance
  • P0608: VSS control module output “A” fault
  • P0609: VSS control module output "B" fault
  • P060A: Processor Performance Monitoring Internal Control Module
  • P060B: Internal control module: A/D performance
  • P060C: Internal Control Module: Main Processor Performance
  • P060D: Internal control module: accelerator pedal position performance
  • P060E: Internal control module: throttle position performance
  • P060F: Internal Control Module - Coolant Temperature Performance
  • P0610: Vehicle Control Module Options Error
  • P0611: Fuel Injector Control Module Performance
  • P0612: Fuel Injector Control Module Relay Control
  • P0613: TCM processor
  • P0614: ECM/TCM incompatibility
  • P0615: Starter Relay Circuit
  • P0616: Starter Relay Circuit Low
  • P0617: Starter Relay Circuit High
  • P0618: Alternate Fuel Control Module KAM Error
  • P0619: Alternate Fuel Control Module RAM/ROM Error
  • P061A: Internal control module: torque characteristics
  • P061B: Internal control module: torque calculation performance
  • P061C: Internal control module: engine speed characteristics
  • P061D: Internal control module - engine air mass performance
  • P061E: Internal control module: brake signal quality
  • P061F: Internal Control Module: Throttle Actuator Controller Performance
  • P0620: Generator control circuit malfunction
  • P0621: Generator Lamp “L” Control Circuit Malfunction
  • P0622: Generator "F" Field Control Circuit Malfunction
  • P0623: Generator lamp control circuit
  • P0624: Fuel Cap Lamp Control Circuit
  • P0625: Generator Field/F Terminal Circuit Low
  • P0626: Generator Field/F Terminal Circuit High
  • P0627: Fuel Pump A Control Circuit/Open
  • P0628: Fuel pump control circuit “A” low
  • P0629: Fuel Pump A Control Circuit High
  • P062A: Fuel Pump A Control Circuit Range/Performance
  • P062B: Internal control module: fuel injector control performance
  • P062C: Vehicle Internal Speed ​​Control Module
  • P062D: Fuel Injector Actuator Circuit Bank 1 Performance
  • P062E: Fuel Injector Actuator Circuit Bank 2 Performance
  • P062F: Control module internal EEPROM error
  • P0630: VIN not programmed or inconsistent - ECM/PCM
  • P0631: VIN not programmed or incorrect
  • P0632: Odometer not programmed into ECM/PCM.
  • P0633: The immobilizer key is not programmed into the ECM/PCM.
  • P0634: PCM/ECM/TCM internal temperature high.
  • P0635: Power steering control circuit.
  • P0636: Power steering control circuit low.
  • P0637: Power steering control circuit high.
  • P0638: Throttle Actuator Control Range/Parameter (Bank 1).
  • P0639: Throttle Actuator Control Range/Parameter (Bank 2).
  • P063A: Generator voltage sensor circuit.
  • P063B: Generator Voltage Sensor Circuit Range/Performance.
  • P063C: Generator voltage sensor circuit low.
  • P063D: Generator voltage sensor circuit high.
  • P063E: No throttle input signal in auto configuration.
  • P063F: There is no engine coolant temperature input signal during auto tuning.
  • P0640: Intake air heater control circuit.
  • P0641: Sensor “A” reference voltage open circuit.
  • P0642: Sensor “A” Reference Circuit Low Voltage.
  • P0643: Sensor “A” Circuit High Reference Voltage.
  • P0644: Driver display serial communication 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.
  • P0649: Speed ​​lamp control circuit.
  • P064A: Fuel pump control module.
  • P064B: PTO control module.
  • P064C: Glow plug control module.
  • P064D: Internal Control Module O2 Sensor Processor Performance Bank 1.
  • P064E: Internal O2 Sensor Control Module Processor Bank 2.
  • P064F: Unauthorized software/calibration detected.
  • P0650: Malfunction indicator lamp (MIL) Control circuit malfunction.
  • P0651: Sensor “B” reference voltage open circuit.
  • P0652: Sensor “B” Reference Circuit Low Voltage.
  • P0653: Sensor “B” Circuit High Reference Voltage.
  • P0654: Engine speed output circuit malfunction.
  • P0655: Hot engine output lamp control circuit malfunction.
  • P0656: Fuel level output circuit malfunction.
  • P0657: Drive supply voltage “A” circuit/open.
  • P0658: Drive “A” supply voltage circuit low.
  • P0659: Drive “A” supply voltage circuit high.
  • Here is a rewritten list with corrected wording:
  • P0698: Sensor “C” Reference Circuit Low Voltage.
  • P0699: Sensor “C” Circuit High Reference Voltage.
  • P069A: Cylinder 9 Glow Plug Control Circuit Low.
  • P069B: Cylinder 9 Glow Plug Control Circuit High.
  • P069C: Cylinder 10 Glow Plug Control Circuit Low.
  • P069D: Cylinder 10 Glow Plug Control Circuit High.
  • P069E: The fuel pump control module has requested the MIL illumination.
  • P069F: Throttle Actuator Warning Lamp Control Circuit.
  • P06A0: AC compressor control circuit.
  • P06A1: A/C compressor control circuit low.
  • P06A2: A/C compressor control circuit high.
  • P06A3: Sensor “D” reference voltage open circuit.
  • P06A4: Sensor “D” reference circuit low voltage.
  • P06A5: Circuit “D” sensor reference voltage high.
  • P06A6: Sensor “A” Reference Voltage Circuit Range/Performance.
  • P06A7: Sensor "B" Reference Voltage Circuit Range/Performance.
  • P06A8: Sensor “C” Reference Voltage Circuit Range/Performance.
  • P06A9: Sensor “D” Reference Voltage Circuit Range/Performance.
  • P06AA: PCM/ECM/TCM “B” internal temperature is too high.
  • P06AB: PCM/ECM/TCM Internal Temperature Sensor “B” Circuit.
  • P06AC: PCM/ECM/TCM Internal Temperature Sensor “B” Range/Performance.
  • P06AD: PCM/ECM/TCM - Internal temperature sensor "B" circuit low.
  • P06AE: PCM/ECM/TCM - Internal temperature sensor "B" circuit high.
  • P06AF: Torque control system - forced engine shutdown.
  • P06B0: Sensor A power supply circuit/open circuit.
  • P06B1: Low voltage in the power supply circuit of sensor “A”.
  • P06B2: High signal level in the power supply circuit of sensor “A”.
  • P06B3: Sensor B power circuit/open.
  • P06B4: Sensor B power supply circuit low.
  • P06B5: High signal level in the power supply circuit of sensor “B”.
  • P06B6: Internal control module knock sensor processor 1 performance.
  • P06B7: Internal control module knock sensor processor 2 performance.
  • P06B8: Control module internal non-volatile random access memory (NVRAM) error.
  • P06B9: Cylinder 1 Glow Plug Circuit Range/Performance.
  • P06BA: Cylinder 2 Glow Plug Circuit Range/Performance.
  • P06BB: Cylinder 3 Glow Plug Circuit Range/Performance.
  • P06BC: Cylinder 4 Glow Plug Circuit Range/Performance.
  • P06BD: Cylinder 5 Glow Plug Circuit Range/Performance.
  • P06BE: Cylinder 6 Glow Plug Circuit Range/Performance.
  • P06BF: Cylinder 7 Glow Plug Circuit Range/Performance.
  • P06C0: Cylinder 8 Glow Plug Circuit: Range/Performance
  • P06C1: Cylinder 9 Glow Plug Circuit: Range/Performance.
  • P06C2: Cylinder 10 Glow Plug Circuit Range/Performance.
  • P06C3: Cylinder 11 Glow Plug Circuit: Range/Performance.
  • P06C4: Cylinder 12 Glow Plug Circuit: Range/Performance.
  • P06C5: Incorrect glow plug for cylinder 1.
  • P06C6: Incorrect glow plug for cylinder 2.
  • P06C7: Incorrect glow plug for cylinder 3.
  • P06C8: Incorrect glow plug for cylinder 4.
  • P06C9: Incorrect glow plug for cylinder 5.
  • P06CA: Incorrect glow plug for cylinder 6.
  • P06CB: Incorrect glow plug for cylinder 7.
  • P06CC: Incorrect glow plug for cylinder 8.
  • P06CD: Incorrect glow plug for cylinder 9.
  • P06CE: Incorrect glow plug for cylinder 10.
  • P06CF: Incorrect glow plug for cylinder 11.
  • P06D0: Incorrect glow plug for cylinder 12.
  • P06D1: Internal control module: ignition coil control characteristics.
  • P06D2 – P06FF: ISO/SAE reserved.

Add a comment