BMW DTC P1146 – Solenoid Valve Running Losses Circuit Open
DTC P1146 meaning on BMW
DTC P1146 on a BMW indicates a fault with the Solenoid Valve Running Losses Circuit being open. This means that there is an electrical issue in the circuit that controls the solenoid valve responsible for managing running losses in the engine.
BMW DTC P1146 symptoms
Symptoms of DTC P1146 on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Increased fuel consumption
- Engine stalling or rough idling
BMW DTC P1146 causes
Common causes of DTC P1146 on a BMW include:
- Faulty solenoid valve
- Wiring or connector issues in the circuit
- ECU (Engine Control Unit) malfunction
BMW DTC P1146 seriousness
DTC P1146 should not be ignored as it can lead to poor engine performance and increased fuel consumption. While the vehicle may still be operable, it is recommended to address the issue promptly to prevent further damage.
How to diagnose DTC P1146 on BMW
To diagnose DTC P1146 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the solenoid valve and its wiring for any visible damage
- Check the ECU for any stored error codes related to the circuit
How to fix DTC P1146 on BMW
To fix DTC P1146 on a BMW, the following steps may be taken:
- Replace the faulty solenoid valve
- Repair or replace any damaged wiring or connectors in the circuit
- If necessary, reprogram or replace the ECU
How to erase DTC P1146 on BMW
DTC P1146 can be erased on a BMW using a diagnostic scanner that has the capability to clear fault codes. Once the underlying issue has been addressed and fixed, the code can be cleared to reset the Check Engine Light.
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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