OBD
P2350
Cylinder 9 Pressure Variation High
What it means
P2350 means Cylinder 9 Pressure Variation High.
Check these first
- Uneven compression in cylinder 9
- A weak cylinder 9 fuel injector
- A worn cylinder 9 spark plug or ignition coil
- A failed cylinder 9 pressure sensor
What to do next
- Read cylinder 9 pressure variation on a scan tool
- Perform a compression test on cylinder 9
- Test the cylinder 9 fuel injector and ignition coil
- Compare cylinder 9 pressure to its neighbors
- Replace the cylinder 9 pressure sensor if the ignition and fuel tests pass
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.