P2338

DTC P2338, sometimes indicated as P233800 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the ignition system causing cylinder 3 above knock threshold.

The DTC P2338 code means that the knock sensor in cylinder 3 is detecting too much knocking. This could be caused by a number of things, including:
- A misfire in cylinder 3
- A bad knock sensor
- Too much fuel in the engine
- Low engine compression in cylinder 3
To fix the problem, you'll need to identify and fix the root cause. If it's a misfire, you'll need to fix that. If it's a bad knock sensor, you'll need to replace it. If it's too much fuel or low compression, you'll need to address that.

• P2338: 3 Above Knock Threshold
• P2338: Cylinder 3 Above Knock Threshold
• P2338: Cylinder 3 – above knock threshold
• P2338 00: Cylinder 3 - above knock threshold