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 opening and closing of a valve in the alternative fuel tank. It's like a door that isn't opening or closing properly when it should.
The code P2A2C indicates that the control circuit for the shutoff valve in the alternative fuel tank is experiencing low voltage or a short circuit.
The P2A2C code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the control circuit of the shutoff valve D for the alternative fuel tank. This could be due to electrical issues such as a short to ground or an open circuit.
• Check engine light on
• Difficulty in switching fuel types
• Reduced fuel efficiency
• Faulty shutoff valve
• Damaged wiring or connectors
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the shutoff valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty shutoff valve.
• Update or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Ensure proper fuel quality
• Inspect wiring and connectors periodically
Sensor Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional if unsure.
• Avoid switching fuel types until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been reported in vehicles with alternative fuel systems, often related to wiring issues.
Moderate – Should be addressed soon to avoid potential drivability issues.
Driving with a malfunctioning fuel system can lead to safety hazards and may not comply with emissions regulations.
• Vehicle must be running.
• Alternative fuel system engaged.
The shutoff valve is typically located near the alternative fuel tank, often underneath the vehicle.
Q: What is an alternative fuel tank?
A: An alternative fuel tank stores fuel types other than gasoline or diesel, like natural gas or hydrogen.
Q: Can I drive with this code?
A: It's best to address the issue soon, as it may affect fuel efficiency and vehicle performance.
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