Cylinder 8 Pressure Sensor Circuit Intermittent/Erratic

Where it lives

For P03DF, the sensor sits on the circuit this code reports. The description of P03DF puts it on cylinder 8.

Check these first

• A loose connector at the cylinder 8 pressure sensor
• A harness that loses the sensor 8 signal with vibration
• A sensor 8 failing as it heats up
• Corroded sensor 8 pins
• Oil or debris moving on the sensor 8 tip

What to do next

1. Wiggle test the sensor 8 harness with a scan tool connected
2. Inspect the cylinder 8 connector for loose or pushed pins
3. Watch cylinder 8 pressure as the engine warms up
4. Clean the sensor 8 tip
5. Replace the cylinder 8 pressure sensor if the signal jumps
6. Clear the code and retest

Look up another code