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 the temperature of the engine's head. It's like when a thermometer gives a wrong reading.
The P017B code indicates that the Cylinder Head Temperature (CHT) sensor is not providing a reading within the expected range.
The Cylinder Head Temperature Sensor A is responsible for monitoring the temperature of the engine's cylinder head. This sensor sends data to the engine control module (ECM), which uses this information to adjust engine parameters for optimal performance. If the sensor's output is outside the specified range, the ECM triggers the P017B code.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty Cylinder Head Temperature Sensor
• Wiring issues or poor electrical connections
• ECM software issues
Cylinder Head: The part of the engine that covers the cylinders, containing the combustion chamber.
ECM: Engine Control Module, the computer that manages engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the Cylinder Head Temperature Sensor for proper operation.
• Replace the Cylinder Head Temperature Sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Update the ECM software if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Ensure proper engine cooling
• Inspect electrical connections periodically
Sensor Issue
• Do not ignore the Check Engine Light.
• Have a professional diagnose the issue if unsure.
• Consider regular vehicle maintenance to prevent sensor issues.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with vehicles experiencing high engine temperatures due to sensor faults.
Moderate – It should be addressed soon to avoid potential engine damage.
Driving with a faulty temperature sensor can lead to engine overheating and potential damage.
• Engine at operating temperature
• Vehicle stationary
The Cylinder Head Temperature Sensor is typically located on the engine's cylinder head.
Q: Can I drive with a P017B code?
A: It's not recommended to drive for long periods with this code as it may lead to engine overheating.
Q: How do I reset the P017B code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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