P2A91
Alternative Fuel Tank Select Valve A Control Circuit/Open
P2A91 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank Select Valve A Control Circuit/Open. Common causes: open or short circuit in valve control circuit, fuel selection solenoid valve malfunction. Estimated repair cost: $17–56.
Symptoms
- Switching to reserve fuel does not occur
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- The car runs on only one type of fuel
Causes
- Open or short circuit in valve control circuit
- Fuel selection solenoid valve malfunction
- Poor contact in circuit connectors
- Wiring harness damage
- Engine control unit malfunction
How to Fix
- Check valve control circuit integrity
- Check valve resistance and operation
- Inspect connectors and contacts for corrosion
- Check for voltage in the control circuit
- If necessary, replace the valve or repair the wiring
Related codes
Error P2A91 by Vehicle Brand
FAQ
What does the P2A91 code mean?
P2A91 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank Select Valve A Control Circuit/Open
What causes a P2A91 error code?
The most common causes of P2A91 include: Open or short circuit in valve control circuit; Fuel selection solenoid valve malfunction; Poor contact in circuit connectors; Wiring harness damage.
How do I fix a P2A91 diagnostic trouble code?
To fix P2A91: Check valve control circuit integrity. Check valve resistance and operation. Inspect connectors and contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2A91?
Limited driving only, diagnose soon
How much does it cost to fix P2A91?
The estimated repair cost for P2A91 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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