OBD-II code · Powertrain (generic)
P0337 Crankshaft Position Sensor "A" Circuit Low Input
The CKP signal voltage is below the lower threshold. Usually a sensor whose internal coil has degraded, or a wiring short to ground.
Is it safe to drive with P0337?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor failed (output too low)
- PossibleSignal shorted to ground
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–4 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Crankshaft Position Sensor, Crankshaft Position Sensor Wiring
Related codes
- P0335Crankshaft Position Sensor "A" Circuit Malfunction
- P0334Knock/Combustion Vibration Sensor B Circuit Intermittent
- P0336Crankshaft Position Sensor "A" Circuit Range/Performance
- P0338Crankshaft Position Sensor "A" Circuit High Input
- P0339Crankshaft Position Sensor A Circuit Intermittent
- P033AKnock/Combustion Vibration Sensor D Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.