Engine Coolant Pressure Sensor Circuit Low

Common symptoms

What you'll notice

• Check and replace the engine coolant pressure sensor.
• Inspect and repair any damaged wiring or connections related to the engine coolant pressure sensor circuit.
• Ensure proper coolant levels and pressure by checking the coolant reservoir and radiator.
• Verify the functioning of the engine's cooling system, including the radiator, water pump, and thermostat.

Common causes

Most likely first

1. Faulty engine coolant pressure sensor
2. Low coolant level
3. Faulty engine coolant temperature sensor
4. Faulty engine control module (ECM)
5. Clogged radiator or coolant passages

How to diagnose & fix

Work through it in order

1. Engine overheating
2. Loss of engine power
3. Poor fuel efficiency
4. Difficulty starting the engine
5. Illuminated check engine light