BMW DTC P1002 – VVL-Limp Home Request Circuit Low
DTC P1002 meaning on BMW
The Diagnostic Trouble Code (DTC) P1002 for BMW refers to the VVL-Limp Home Request Circuit Low. This code indicates that there is a low voltage condition detected in the Variable Valve Lift (VVL) system, causing the engine to enter a ¨limp home¨ mode to prevent further damage.
BMW DTC P1002 symptoms
Symptoms of the BMW DTC P1002 may include:
- Reduced engine performance
- Engine running in a restricted ¨limp home¨ mode
- Illuminated check engine light
BMW DTC P1002 causes
Common causes of the BMW DTC P1002 may include:
- Faulty VVL-Limp Home Request Circuit
- Wiring or connection issues in the VVL system
- Defective VVL actuator
BMW DTC P1002 seriousness
The seriousness of the BMW DTC P1002 lies in the fact that it can lead to reduced engine performance and potential engine damage if not addressed promptly. Driving with the engine in ¨limp home¨ mode for an extended period can also affect fuel efficiency and overall vehicle drivability.
How to diagnose DTC P1002 on BMW
To diagnose the DTC P1002 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the VVL-Limp Home Request Circuit for any visible damage or loose connections
- Test the VVL actuator for proper operation
- Check the wiring harness for continuity and shorts
How to fix DTC P1002 on BMW
To fix the DTC P1002 on a BMW, the following steps may be taken:
- Repair or replace any damaged wiring in the VVL-Limp Home Request Circuit
- Replace the VVL actuator if found to be faulty
- Clear the fault codes using a diagnostic scanner
- Test drive the vehicle to ensure the issue has been resolved
How to erase DTC P1002 on BMW
To erase the DTC P1002 on a BMW, follow these steps:
- Connect a diagnostic scanner to the vehicle’s OBD-II port
- Select the option to clear fault codes from the scanner menu
- Confirm the action and wait for the scanner to erase the DTC P1002 code
- Disconnect the scanner and start the vehicle to ensure the code has been successfully cleared