Error code
OBD2 P2339
OBD2P2339
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Cylinder #4 Above Knock Threshold.
Severity
moderateCan drive but should address the issue soon to prevent engine damage.
Summary
P2339 indicates that cylinder #4 is experiencing excessive knocking, which can be caused by ignition timing issues, faulty knock sensors, poor fuel quality, or mechanical problems.
Common Causes
- Ignition timing issue
- Faulty knock sensor in cylinder 4
- Poor fuel quality
- Mechanical fault
Fixes
FAQ
What does P2339 mean?
P2339 means that cylinder #4 is experiencing excessive knocking, which can be caused by ignition timing issues, faulty knock sensors, poor fuel quality, or mechanical problems.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P2300Ignition Coil 'A' Primary Control Circuit Low
- P2301Ignition Coil 'A' Primary Control Circuit High
- P2302Ignition Coil 'A' Secondary Circuit
- P2303Ignition Coil 'B' Primary Control Circuit Low
- P2304Ignition Coil 'B' Primary Control Circuit High
- P2305Ignition Coil 'B' Secondary Circuit
- P2306Ignition Coil 'C' Primary Control Circuit Low
- P2307Ignition Coil 'C' Primary Control Circuit High
- P2308Ignition Coil 'C' Secondary Circuit
- P2309Ignition Coil 'D' Primary Control Circuit Low
- P2310Ignition Coil 'D' Primary Control Circuit High
- P2311Ignition Coil 'D' Secondary Circuit