P0385
Crankshaft Position Sensor B Circuit
A general electrical fault on crankshaft position sensor B — second crank sensor used as backup or for advanced timing models on some engines.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Sensor failedCommon
Parts involved
- Crankshaft Position Sensor
P0385 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.