P03A0
Cylinder 2 Pressure Sensor Circuit Range/Performance
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace the spark plug in cylinder 2
- Inspect and clean the fuel injector in cylinder 2
- Verify and repair any damage or loose wiring in the cylinder 2 pressure sensor circuit
- Test and potentially replace the cylinder 2 pressure sensor
- Perform a compression test on cylinder 2 to identify any internal engine issues
Common causes
Most likely first
- Faulty cylinder 2 pressure sensor
- Loose or corroded wiring/connectors in the cylinder 2 pressure sensor circuit
- Engine misfire in cylinder 2
- Low fuel pressure in cylinder 2
- Engine mechanical problem in cylinder 2 (such as a worn piston or damaged valve)
How to diagnose & fix
Work through it in order
- Engine misfire or rough idle
- Decreased engine performance or power
- Poor fuel efficiency
- Check Engine Light (CEL) illuminated
- Vehicle stalling or hesitation upon acceleration
Read & clear P03A0 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.