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 thinks the temperature sensors in the engine are not agreeing with each other. It's like having two thermometers that should show the same temperature, but they don't.
The car's computer uses sensors to monitor the temperature of the engine's cylinder head. If the readings from two sensors don't match, it triggers this error code.
The P2C3D code indicates a discrepancy between the readings of two cylinder head temperature sensors (Sensor A and Sensor B). The Engine Control Module (ECM) expects these sensors to provide consistent temperature readings. If the readings are not within a specified range of each other, the ECM logs this code.
• Check Engine Light is on
• Engine overheating
• Poor engine performance
• Faulty cylinder head temperature sensor
• Wiring issues or poor connections
• ECM malfunction
ECM: Engine Control Module, the computer that controls engine functions.
Cylinder Head: The part of the engine that houses the combustion chambers and valves.
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connections of the temperature sensors.
• Test the sensors for proper operation.
• Replace faulty temperature sensor.
• Repair or replace damaged wiring.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 to $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect sensor connections.
• Perform routine engine maintenance.
• Use high-quality sensors.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional.
• Avoid driving the vehicle if overheating occurs.
Check with your vehicle's manufacturer for warranty coverage on engine sensors.
This code is relatively rare and usually occurs in vehicles with high mileage or poor maintenance history.
Moderate – Addressing this issue promptly can prevent engine damage.
Driving with an unresolved engine temperature issue can lead to engine failure and is unsafe.
• Engine at operating temperature
• Vehicle stationary
The cylinder head temperature sensors are typically located on the engine's cylinder head, near the top of the engine block.
Q: Can I drive with a P2C3D code?
A: It's not recommended to drive with this code as it may indicate an engine overheating issue.
Q: How do I know which sensor is faulty?
A: A diagnostic scan and sensor test can help determine which sensor is faulty.
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