P03AA
Cylinder 3 Pressure Sensor Circuit Range/Performance
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace faulty cylinder 3 pressure sensor
- Inspect and repair any damaged wiring or connections related to the cylinder 3 pressure sensor
- Clean or replace the intake manifold if necessary
- Perform an engine compression test to determine if there are any other underlying issues affecting cylinder 3 performance
Common causes
Most likely first
- Faulty cylinder 3 pressure sensor
- Wiring or connection issue related to the cylinder 3 pressure sensor
- Engine misfire in cylinder 3
- Faulty fuel injector in cylinder 3
- Low compression in cylinder 3
How to diagnose & fix
Work through it in order
- Engine misfires or runs rough
- Decreased engine performance
- Poor fuel economy
- Illuminated check engine light
- Difficulty starting the engine
Read & clear P03AA yourself
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