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 is having trouble reading how much fuel is in a special tank that holds alternative fuel, like natural gas or hydrogen. It's like when your game controller keeps disconnecting from the console.
The P2A63 code indicates an issue with the sensor that measures the level of alternative fuel in the tank. The sensor's signal is not stable or consistent.
The P2A63 code is triggered when the Engine Control Module (ECM) detects an intermittent or erratic signal from the alternative fuel tank B level sensor circuit. This can affect the vehicle's ability to monitor and manage fuel levels accurately.
• Check Engine Light is on
• Fluctuating or incorrect fuel level readings
• Possible fuel system performance issues
• Faulty level sensor
• Damaged wiring or connectors
• ECM software issue
ECM: Engine Control Module, the computer that manages engine functions.
OBD-II: On-Board Diagnostics, a system that monitors vehicle performance.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the level sensor for proper operation.
• Repair or replace damaged wiring/connectors.
• Replace the faulty level sensor.
• Update or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Toyota Prius
• Honda Civic Natural Gas
• Chevrolet Volt
• Regularly inspect fuel system wiring.
• Ensure connectors are secure and clean.
• Keep ECM software updated.
Sensor Issue
• Avoid running the vehicle on low fuel levels.
• Have the fuel system inspected regularly.
• Use recommended alternative fuels.
Check with the vehicle manufacturer for warranty coverage on fuel system components.
This code has been more common in vehicles using alternative fuels as the technology has evolved.
Moderate – Addressing this issue can prevent future fuel management problems.
Driving with a malfunctioning fuel level sensor can lead to unexpected vehicle behavior. Ensure repairs are made promptly.
• Vehicle must be running.
• Alternative fuel tank should have fuel.
The alternative fuel tank level sensor is located inside or near the alternative fuel tank.
Q: Can I drive with a P2A63 code?
A: It's possible, but not recommended as it can lead to incorrect fuel level readings and potential performance issues.
Q: How do I know if the sensor is faulty?
A: A professional mechanic can test the sensor's output to determine if it's working correctly.
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