Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the part that switches between different fuel tanks. It's like a switch that isn't working right.
The P2A94 code indicates that the control circuit for the alternative fuel tank select valve is registering a higher voltage than expected.
The alternative fuel tank select valve is responsible for switching between different fuel tanks in vehicles that use more than one type of fuel. The 'Control Circuit High' indicates that the electrical circuit controlling this valve is experiencing higher than normal voltage, which can prevent the valve from operating correctly.
• Check Engine Light is on
• Difficulty switching between fuel tanks
• Possible fuel delivery issues
• Faulty alternative fuel tank select valve
• Wiring issues such as shorts or open circuits
• Faulty control module
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosing and reporting
Valve: A device that regulates the flow of substances by opening, closing, or partially obstructing passageways
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections for damage or corrosion
• Test the voltage and resistance of the select valve circuit
• Repair or replace damaged wiring
• Replace the alternative fuel tank select valve
• Replace or reprogram the control module if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Chevrolet Volt
• Toyota Prius
• Ford Fusion Hybrid
• Regularly inspect and maintain wiring connections
• Ensure fuel system components are clean and free of debris
• Follow manufacturer-recommended maintenance schedules
Electrical Circuit Issue
• Have the vehicle inspected by a professional mechanic
• Avoid switching fuel types until the issue is resolved
Check with the vehicle manufacturer for specific warranty coverage on fuel system components.
This code is relatively uncommon and is typically associated with vehicles that have dual-fuel systems.
Moderate – It should be addressed to ensure proper fuel system operation, but it is not an immediate safety concern.
Driving with this code may not comply with emissions regulations. Always ensure your vehicle is safe to drive.
• Engine running
• Attempting to switch fuel tanks
The alternative fuel tank select valve is usually located near the fuel tanks or along the fuel lines.
Q: Can I drive with the P2A94 code?
A: It is possible to drive with this code, but it may lead to fuel system issues. It is best to have it checked soon.
Q: Will this code affect fuel efficiency?
A: Yes, it might affect fuel efficiency if the vehicle cannot switch between fuel tanks properly.
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