WOMS
P code powertrain Medium severity

P1682 Metering Oil Pump Malfunction

The OBD2 code P1682 indicates a malfunction in the metering oil pump, which is responsible for regulating the flow of oil to the engine

Definition

The OBD2 code P1682 indicates a malfunction in the metering oil pump, which is responsible for regulating the flow of oil to the engine

Common causes

  • Faulty metering oil pump
  • Wiring issues or damaged connectors
  • Low oil level or oil contamination
  • Failed oil pressure sensor
  • Malfunctioning engine control module (ECM)
  • Blocked oil passages
  • Faulty oil pump relay

Common misdiagnoses

  • Faulty engine control module (ECM)
  • Wiring issues or short circuits
  • Faulty oil pressure sensor
  • Incorrect oil level or quality
  • Fuel system issues
  • Ignition system problems
  • Sensor calibration errors
  • Other oil pump-related issues

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues

  2. 2. Inspect Wiring and Connectors

    Examine the wiring and connectors related to the oil metering pump. Look for signs of damage, corrosion, or loose connections that could affect the pump's operation

  3. 3. Test the Oil Metering Pump

    If accessible, test the oil metering pump for proper operation. This may involve checking the resistance of the pump's electrical components or using a multimeter to ensure it is receiving the correct voltage

  4. 4. Check Oil Level and Quality

    Ensure that the engine oil level is adequate and that the oil is in good condition. Low oil levels or contaminated oil can affect the performance of the oil metering system

  5. 5. Inspect the Oil Filter

    A clogged or dirty oil filter can restrict oil flow, leading to issues with the oil metering pump. Replace the oil filter if necessary

  6. 6. Examine the Engine Control Module (ECM)

    The ECM controls the oil metering pump. Check for any software updates or reprogramming that may be required. In some cases, a faulty ECM can cause erroneous codes

  7. 7. Check for Mechanical Issues

    Inspect the engine for any mechanical issues that could affect oil flow, such as a failing oil pump or internal engine problems

  8. 8. Clear the Codes and Test Drive

    After performing the above checks and repairs, clear the trouble codes and take the vehicle for a test drive to see if the code reappears

  9. 9. Seek Professional Help

    If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has experience with the specific make and model of your vehicle. By following these troubleshooting steps, you can systematically identify and address the underlying cause of the P1682 code