OBD-II code · Powertrain (generic)
P0338 Crankshaft Position Sensor "A" Circuit High Input
The CKP signal voltage is above the upper threshold. Either a sensor producing excess output or a short to supply voltage.
Is it safe to drive with P0338?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal wire shorted to supply voltage
- PossibleSensor failed
- 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
- P0336Crankshaft Position Sensor "A" Circuit Range/Performance
- P0337Crankshaft Position Sensor "A" Circuit Low Input
- P0339Crankshaft Position Sensor A Circuit Intermittent
- P033AKnock/Combustion Vibration Sensor D Circuit
- P033BKnock/Combustion Vibration Sensor D Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.