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 understanding how much fuel is in the tank because the sensor that reads the fuel level isn't working right.
The P2066 code is triggered when the fuel level sensor 'B' does not perform as expected. This sensor is responsible for sending the fuel level data to the car's computer.
The fuel level sensor 'B' is part of the fuel sending unit, which measures the amount of fuel in the tank and sends this information to the engine control module (ECM). If the ECM detects an irregular or unexpected signal from this sensor, it triggers the P2066 code.
• Inaccurate fuel gauge reading
• Check Engine Light illuminated
• Possible fuel system performance issues
• Faulty fuel level sensor
• Wiring issues or poor electrical connections
• Malfunctioning fuel pump module
ECM: Engine Control Module, the computer that manages engine functions.
OBD-II: On-Board Diagnostics, a standardized system for vehicle self-diagnosis and reporting.
• Use an OBD-II scanner to confirm the P2066 code.
• Inspect the wiring and connections to the fuel level sensor.
• Test the fuel level sensor for proper operation.
• Replace the faulty fuel level sensor.
• Repair or replace damaged wiring or connectors.
• Replace the fuel pump module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly check and maintain fuel system components.
• Ensure proper electrical connections.
• Use quality fuel to avoid contamination.
Sensor Issue
• Monitor fuel gauge for accuracy.
• Address the issue promptly to avoid running out of fuel unexpectedly.
Check vehicle warranty for coverage on fuel system components.
The P2066 code has been associated with fuel level sensor issues in various vehicle models, often leading to inaccurate fuel readings.
Moderate – While the vehicle may still operate, inaccurate fuel readings can lead to running out of fuel unexpectedly.
Driving with an inaccurate fuel gauge can lead to unexpected vehicle shutdowns. Ensure repairs are conducted by a qualified technician.
• Vehicle must be parked on a level surface.
• Fuel tank should be at least half full for accurate testing.
The fuel level sensor is typically located inside the fuel tank, attached to the fuel pump module.
Q: Can I drive with a P2066 code?
A: Yes, but it's not recommended as you may run out of fuel unexpectedly due to inaccurate gauge readings.
Q: How do I reset the P2066 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, it should not return.
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