Engine Coolant Temperature Sensor 5 Circuit Low

Where it lives

For P2B2D, the circuit described runs through the sensor. The description of P2B2D reports a fault at the sensor.

Check these first

• A short to ground on the engine coolant temperature sensor 5 signal wire
• A failed engine coolant temperature sensor 5
• A sensor 5 harness chafed to ground
• Coolant intrusion shorting the sensor 5 connector

What to do next

1. Scan all modules and read engine coolant temperature sensor 5 voltage
2. Inspect the sensor 5 harness and connector for chafing or coolant
3. Test the sensor 5 signal wire for a short to ground
4. Compare sensor 5 resistance hot and cold to the coolant range
5. Replace engine coolant temperature sensor 5 if the harness is clear
6. Clear the code and retest

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