Cylinder 3 Pressure Sensor Circuit Low

Where it lives

For P03AB, the circuit described runs through the sensor. The description of P03AB puts it on cylinder 3.

Check these first

• Failed cylinder 3 pressure sensor
• Short to ground in the cylinder 3 sensor circuit
• Corrosion or water at the cylinder 3 sensor connector
• Incorrect cylinder 3 sensor calibration
• Low battery voltage affecting the cylinder 3 sensor

What to do next

1. Check battery voltage and the electrical system
2. Inspect the cylinder 3 pressure sensor and connector
3. Test the cylinder 3 sensor circuit for a short to ground
4. Read cylinder 3 pressure live data against spec
5. Replace the cylinder 3 pressure sensor if the signal is low
6. Clear the code and retest

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