Engine Coolant Pressure Sensor Circuit Intermittent/Erratic

Common symptoms

What you'll notice

• Check for loose or damaged wiring connections in the engine coolant pressure sensor circuit
• Inspect the engine coolant pressure sensor for any signs of damage or malfunction
• Verify that the engine coolant pressure sensor is properly calibrated and adjusted
• Clean or replace the engine coolant pressure sensor if necessary

Common causes

Most likely first

1. Loose or faulty connection at the engine coolant pressure sensor
2. Malfunctioning engine coolant pressure sensor
3. Low engine coolant level
4. Faulty engine coolant temperature sensor
5. Wiring issue in the engine coolant pressure sensor circuit

How to diagnose & fix

Work through it in order

1. Engine overheating
2. Loss of engine power or acceleration
3. Rough idle or stalling
4. Check Engine Light illuminating
5. Decreased fuel efficiency