Cylinder 1 Pressure Sensor Circuit

Where it lives

For P0395, the sensor sits on the circuit this code reports. The description of P0395 puts it on cylinder 1.

Check these first

• Failed cylinder 1 pressure sensor
• Open or shorted wire in the cylinder 1 pressure sensor circuit
• Corrosion or water in the cylinder 1 sensor connector
• Incorrect cylinder 1 sensor installation or calibration
• Wiring harness damage feeding the cylinder 1 sensor

What to do next

1. Inspect the cylinder 1 pressure sensor and connector
2. Test the cylinder 1 sensor circuit for opens and shorts
3. Read cylinder 1 pressure live data for plausibility
4. Run a compression test to rule out a mechanical fault
5. Replace the cylinder 1 pressure sensor if the circuit is sound
6. Clear the code and retest

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