BMW DTC P1071 – Internal VVL-Control Module Watchdog or Temperature Sensor Error (Bank 1)
DTC P1071 meaning on BMW
The DTC P1071 on a BMW indicates an Internal VVL-Control Module Watchdog or Temperature Sensor Error in Bank 1. This fault code is related to the Variable Valve Lift (VVL) system, which controls the opening and closing of the engine’s intake and exhaust valves for optimal performance.
BMW DTC P1071 symptoms
Symptoms of the DTC P1071 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Reduced engine performance
- Engine running rough or misfiring
- Decreased fuel efficiency
BMW DTC P1071 causes
The DTC P1071 on a BMW can be caused by various factors, including:
- Faulty VVL-Control Module
- Defective Temperature Sensor
- Wiring or connection issues
- Software glitches
BMW DTC P1071 seriousness
The seriousness of the DTC P1071 fault code on a BMW depends on the underlying cause. Ignoring this issue can lead to further engine problems and potential damage if not addressed promptly. It is recommended to diagnose and fix the issue as soon as possible.
How to diagnose DTC P1071 on BMW
To diagnose the DTC P1071 on a BMW, you can follow these steps:
- Use an OBD-II scanner to retrieve the fault code and freeze frame data
- Inspect the VVL-Control Module and Temperature Sensor for any visible damage
- Check the wiring and connections for any signs of wear or corrosion
- Perform a thorough inspection of the VVL system components
How to fix DTC P1071 on BMW
To fix the DTC P1071 on a BMW, you can consider the following actions:
- Replace the faulty VVL-Control Module or Temperature Sensor
- Repair any damaged wiring or connections
- Update the software or perform a reflash if necessary
- Clear the fault code and reset the Check Engine Light
How to erase DTC P1071 on BMW
To erase the DTC P1071 on a BMW, you can use an OBD-II scanner to clear the fault code from the vehicle’s memory. After fixing the underlying issue, you can reset the Check Engine Light and ensure that the fault code does not reappear during subsequent driving cycles.