Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble getting a steady reading from the sensor that checks how hot the engine is. It's like when a thermometer keeps changing its mind about the temperature.
This code indicates that the signal from the cylinder head temperature sensor is not stable, causing intermittent or erratic readings.
The P017E code is triggered when the Powertrain Control Module (PCM) detects an intermittent or erratic signal from the cylinder head temperature sensor 'A'. This sensor monitors the temperature of the engine's cylinder head and sends this information to the PCM to help control engine functions such as fuel mixture and ignition timing.
• Check Engine Light illuminated
• Poor engine performance
• Engine overheating or running too cool
• Faulty cylinder head temperature sensor
• Wiring issues such as frayed wires or poor connections
• Faulty PCM or software issue
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code
• Inspect the cylinder head temperature sensor and its wiring
• Test the sensor's resistance and voltage output
• Replace the cylinder head temperature sensor
• Repair or replace damaged wiring or connectors
• Update or reprogram the PCM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect sensor wiring for damage
• Ensure proper engine cooling system maintenance
• Use quality replacement parts
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent engine damage.
• Consult a professional mechanic if unsure about repairs.
Check with the vehicle manufacturer for possible coverage under emissions warranty.
This code has been more commonly reported in vehicles with higher mileage or those that have experienced overheating issues.
Moderate – Should be addressed soon to prevent potential engine damage.
Driving with this issue may lead to engine overheating, which can cause significant engine damage.
• Engine at operating temperature
• Vehicle stationary
The cylinder head temperature sensor is usually located on the engine block or cylinder head.
Q: Can I drive with a P017E code?
A: It's not recommended to drive with this code as it may lead to engine overheating.
Q: How do I know if the sensor is bad?
A: A faulty sensor may cause erratic temperature readings and trigger the Check Engine Light.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.