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 switches between different fuel tanks. It's like a switch that isn't working right.
The P2A93 code indicates that the control circuit for the valve that selects the alternative fuel tank is reading a low voltage, suggesting a potential electrical issue.
The Alternative Fuel Tank Select Valve A is responsible for switching between different fuel tanks in vehicles that use alternative fuels. A 'Control Circuit Low' error means that the electrical circuit controlling this valve is experiencing low voltage, which can be due to wiring issues, a faulty valve, or a problem with the control module.
• Check Engine Light is on
• Inability to switch fuel tanks
• Reduced fuel efficiency
• Faulty alternative fuel tank select valve
• Damaged or corroded wiring or connectors
• Faulty control module
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosing and reporting.
Multimeter: A tool used to measure electrical voltage, current, and resistance.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty select valve.
• Replace or reprogram the control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Toyota Prius
• Honda Civic Hybrid
• Chevrolet Volt
• Regularly inspect wiring and connectors.
• Ensure proper maintenance of fuel system components.
• Avoid exposure to harsh environmental conditions.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you experience fuel switching issues.
Check with your vehicle manufacturer for warranty coverage on fuel system components.
This code is more common in vehicles with multiple fuel sources, especially those using alternative fuels.
Moderate – While the vehicle may still run, ignoring the issue can lead to more significant problems.
Driving with a malfunctioning fuel system can lead to increased emissions and potential safety hazards.
• Vehicle must be running.
• Fuel tank switching should be attempted.
The select valve is usually located near the fuel tanks and is accessible from underneath the vehicle.
Q: Can I drive with this code?
A: It's possible, but not recommended as it can lead to further issues.
Q: How do I reset the Check Engine Light?
A: After repairs, use an OBD-II scanner to clear the code.
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