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 sensor that tells the car how much fuel is in a special fuel tank. It's not working right all the time.
The P2A68 code is triggered when the sensor that measures the fuel level in an alternative fuel tank (like a tank for natural gas or hydrogen) is sending signals that are not consistent or are erratic.
The P2A68 code indicates that the Powertrain Control Module (PCM) has detected an intermittent or erratic signal from the fuel level sensor circuit of an alternative fuel tank, labeled as 'C'. This can affect the vehicle's ability to accurately gauge fuel levels, potentially leading to incorrect fuel readings.
• Inaccurate fuel gauge readings
• Check engine light illuminated
• Potential stalling or performance issues
• Faulty fuel level sensor
• Wiring issues such as damaged wires or poor connections
• Faulty PCM or software issue
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the fuel level sensor.
• Test the fuel level sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty fuel level sensor.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Wiring repair tools
$150 - $400
Moderate
• Toyota Prius
• Honda Civic Natural Gas
• Chevrolet Volt
• Regularly inspect and maintain fuel system components.
• Ensure proper installation of alternative fuel systems.
• Keep software and firmware up to date.
Sensor Issue
• Avoid running the vehicle on low fuel to prevent sensor issues.
• Regularly check for updates or recalls related to the fuel system.
Check with the vehicle manufacturer for specific warranty coverage on fuel system components.
This code has become more common with the increased use of alternative fuel vehicles, highlighting the importance of reliable sensor technology.
Moderate – Should be addressed soon to ensure accurate fuel readings and prevent potential performance issues.
Driving with an inaccurate fuel gauge can lead to unexpected stalling, which may be dangerous.
• Vehicle must be running.
• Fuel level should be fluctuating to test sensor response.
The fuel level sensor for the alternative fuel tank is typically located within or near the tank itself.
Q: Can I drive with a P2A68 code?
A: It's possible to drive, but it's not recommended as it may lead to inaccurate fuel readings and potential stalling.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code after the necessary repairs have been made.
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