Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that controls the valve for an alternative fuel tank. It's like a switch that isn't working right, so the car can't use the extra fuel tank properly.
The engine control module (ECM) has detected an issue with the circuit controlling the shutoff valve for the alternative fuel tank. This could be due to an open circuit, meaning the electrical path is broken.
The P2A2A code indicates that the ECM has identified an open circuit or fault in the control circuit for the shutoff valve of an alternative fuel tank. This valve is responsible for controlling the flow of alternative fuel, and a fault can lead to improper fuel management.
• Check Engine Light is on
• Inability to switch to alternative fuel
• Possible fuel smell
• Faulty shutoff valve
• Broken or damaged wiring
• Failed ECM or control module
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
Valve: A device that regulates the flow of fuel
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the shutoff valve.
• Test the shutoff valve for proper operation.
• Repair or replace damaged wiring.
• Replace the faulty shutoff valve.
• Replace or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Honda Civic Hybrid
• Chevrolet Volt
• Regularly inspect wiring for damage.
• Ensure proper maintenance of fuel system components.
• Use quality fuel to prevent contamination.
Circuit Issue
• Avoid using the alternative fuel tank until the issue is resolved.
• Consult a professional mechanic if unsure about repairs.
Check with the vehicle manufacturer as this may be covered under emissions warranty.
This code is less common and typically associated with hybrid or alternative fuel vehicles.
Moderate – It should be addressed to ensure proper fuel management and vehicle efficiency.
Operating a vehicle with a malfunctioning fuel system component may be illegal in some areas due to emissions regulations.
• Vehicle in operating temperature
• Alternative fuel tank engaged
The shutoff valve is typically located near the alternative fuel tank, often under the vehicle.
Q: Can I drive my car with this code?
A: It's possible, but not recommended as it may lead to inefficient fuel use and potential emissions issues.
Q: Will fixing this code improve my fuel efficiency?
A: Yes, resolving this issue can help ensure the vehicle uses the alternative fuel properly, improving efficiency.
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