P03A2
Cylinder 2 Pressure Sensor Circuit High
P03A2 is an OBD-II diagnostic trouble code meaning: Cylinder 2 Pressure Sensor Circuit High. Common causes: malfunction of the pressure sensor in cylinder 2, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Loss of engine power
- Floating idle speed
- Misfire in cylinder 2
- Check Engine Light Illuminates
Causes
- Malfunction of the pressure sensor in cylinder 2
- Open or short circuit in wiring harness
- Poor contact in sensor connectors
- Damage to the sensor power/ground circuit
- Engine ECU malfunction
How to Fix
- Diagnose the actual pressure in cylinder 2 (compare with reference values)
- Check the continuity and resistance of the sensor circuit
- Inspect connectors and contacts for corrosion or damage
- If necessary, replace the cylinder pressure sensor
- Update ECU firmware (if required)
Related codes
Error P03A2 by Vehicle Brand
FAQ
What does the P03A2 code mean?
P03A2 is an OBD-II diagnostic trouble code that indicates: Cylinder 2 Pressure Sensor Circuit High
What causes a P03A2 error code?
The most common causes of P03A2 include: Malfunction of the pressure sensor in cylinder 2; Open or short circuit in wiring harness; Poor contact in sensor connectors; Damage to the sensor power/ground circuit.
How do I fix a P03A2 diagnostic trouble code?
To fix P03A2: Diagnose the actual pressure in cylinder 2 (compare with reference values). Check the continuity and resistance of the sensor circuit. Inspect connectors and contacts for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P03A2?
Limited driving only, diagnose soon
How much does it cost to fix P03A2?
The estimated repair cost for P03A2 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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