OBD-II code · Powertrain (generic)
P033F Crankshaft/Camshaft Loss Of Synchronization
The PCM has lost crank-to-cam synchronization — the relative phase between crankshaft and camshaft no longer matches the calibrated reference. Causes include a stretched or jumped timing chain, broken cam timing tooth, or sensor signal corruption.
Is it safe to drive with P033F?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyTiming chain stretched or jumped
- PossibleCrank or cam sensor signal corrupted
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–12 h
- Emissions test
- Likely to fail
- Parts involved
- Timing Chain, Crankshaft Position Sensor, Camshaft Position Sensor
Related codes
- P033CKnock/Combustion Vibration Sensor D Circuit Low
- P033DKnock/Combustion Vibration Sensor D Circuit High
- P033EKnock/Combustion Vibration Sensor D Circuit Intermittent
- P0340Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)
- P0341Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1)
- P0342Camshaft Position Sensor "A" Circuit Low Input (Bank 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.