P1002 – BMW DTC

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:

1. Use a diagnostic scanner to retrieve the fault codes
2. Inspect the VVL-Limp Home Request Circuit for any visible damage or loose connections
3. Test the VVL actuator for proper operation
4. 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:

1. Repair or replace any damaged wiring in the VVL-Limp Home Request Circuit
2. Replace the VVL actuator if found to be faulty
3. Clear the fault codes using a diagnostic scanner
4. 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:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port
2. Select the option to clear fault codes from the scanner menu
3. Confirm the action and wait for the scanner to erase the DTC P1002 code
4. Disconnect the scanner and start the vehicle to ensure the code has been successfully cleared

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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