BMW DTC P2A91 – Alternative Fuel Tank Select Valve ‘A’ Control Circuit/Open
DTC P2A91 meaning on BMW
The DTC P2A91 code on a BMW indicates an issue with the Alternative Fuel Tank Select Valve ‘A’ Control Circuit being open. This means that there is a malfunction in the circuit that controls the valve, preventing it from operating properly.
BMW DTC P2A91 symptoms
Symptoms of the DTC P2A91 code on a BMW may include:
- Check Engine Light illuminated
- Reduced fuel efficiency
- Engine running rough
- Difficulty starting the vehicle
BMW DTC P2A91 causes
Common causes of the DTC P2A91 code on a BMW include:
- Faulty Alternative Fuel Tank Select Valve ‘A’
- Open or short circuit in the control wiring
- Corrosion or poor connections in the circuit
BMW DTC P2A91 seriousness
The DTC P2A91 code should not be ignored as it can lead to poor engine performance and reduced fuel efficiency. Continuing to drive with this issue unresolved may cause further damage to the vehicle.
How to diagnose DTC P2A91 on BMW
To diagnose the DTC P2A91 code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the wiring and connectors for any visible damage or corrosion
- Test the Alternative Fuel Tank Select Valve ‘A’ for proper operation
- Check for any other related codes or issues
How to fix DTC P2A91 on BMW
To fix the DTC P2A91 code on a BMW, the following steps may be taken:
- Replace the faulty Alternative Fuel Tank Select Valve ‘A’
- Repair any open or short circuits in the control wiring
- Clean or replace any corroded connectors
- Clear the fault codes and test drive the vehicle to ensure the issue is resolved
How to erase DTC P2A91 on BMW
To erase the DTC P2A91 code on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the vehicle’s computer. Once the codes are cleared, the Check Engine Light should turn off. It is important to ensure that the underlying issue causing the code has been properly addressed before clearing the code.
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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