BMW DTC P1291 – Fuel Volume Regulator Output Stage Over Temperature
DTC P1291 meaning on BMW
The Diagnostic Trouble Code (DTC) P1291 for BMW indicates an issue with the Fuel Volume Regulator Output Stage Over Temperature. This means that the fuel volume regulator control module has detected that the output stage temperature is exceeding the specified limits.
BMW DTC P1291 symptoms
Symptoms of DTC P1291 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Reduced engine performance
- Engine running rough or stalling
- Decreased fuel efficiency
BMW DTC P1291 causes
Common causes of DTC P1291 on a BMW include:
- Faulty fuel volume regulator
- Wiring or connection issues
- Overheating of the fuel volume regulator
BMW DTC P1291 seriousness
DTC P1291 should be addressed promptly as it can lead to engine performance issues and potential damage if left unresolved. Ignoring this code may result in poor fuel economy and drivability problems.
How to diagnose DTC P1291 on BMW
To diagnose DTC P1291 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the fuel volume regulator for any signs of damage or overheating
- Check the wiring and connections for any faults
- Test the fuel volume regulator output stage for proper operation
How to fix DTC P1291 on BMW
To fix DTC P1291 on a BMW, the following steps may be taken:
- Replace the faulty fuel volume regulator if necessary
- Repair any damaged wiring or connections
- Clean or replace any clogged fuel filters
- Ensure proper cooling of the fuel volume regulator
How to erase DTC P1291 on BMW
To erase DTC P1291 on a BMW, the fault codes can be cleared using a diagnostic scanner. After addressing the underlying issue causing the code, the scanner can be used to reset the codes and clear 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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