Cylinder Head Temperature Sensor A Range/Performance

Common symptoms

What you'll notice

• Check and replace the cylinder head temperature sensor if it is malfunctioning or showing inaccurate readings.
• Inspect and repair any wiring or connector issues related to the cylinder head temperature sensor.
• Clean or replace the intake air temperature sensor if it is affecting the readings of the cylinder head temperature sensor.
• Check for any coolant leaks or low coolant levels that could be causing incorrect temperature readings and repair accordingly.
• Perform a thorough inspection of the engine cooling system, including radiator, thermostat, and water pump, to ensure proper functioning and adequate cooling.

Common causes

Most likely first

1. Faulty or damaged cylinder head temperature sensor
2. Wiring or connection issues with the cylinder head temperature sensor
3. Engine overheating or coolant system malfunction
4. Engine misfiring or running rich/lean
5. Faulty engine control module (ECM) or powertrain control module (PCM)

How to diagnose & fix

Work through it in order

1. Engine overheating
2. Loss of power or poor acceleration
3. Poor fuel efficiency
4. Rough idle or stalling
5. Illuminated check engine light