OBD-II code · Powertrain (generic)
P0339 Crankshaft Position Sensor A Circuit Intermittent
The crankshaft position sensor A signal jumps or drops out intermittently — connector, sensor air gap, or damaged tone wheel. The PCM may detect a "false" stall or misfire spike when the signal drops.
Is it safe to drive with P0339?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent connector
- PossibleTone wheel chipped or contaminated
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Crankshaft Position Sensor, Flywheel
Related codes
- P0389Crankshaft Position Sensor B Circuit Intermittent
- P0336Crankshaft Position Sensor "A" Circuit Range/Performance
- P0337Crankshaft Position Sensor "A" Circuit Low Input
- P0338Crankshaft Position Sensor "A" Circuit High Input
- P033AKnock/Combustion Vibration Sensor D Circuit
- P033BKnock/Combustion Vibration Sensor D Circuit Range/Performance
- P033CKnock/Combustion Vibration Sensor D Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.