P0375
Timing Reference High Resolution Signal B
A general electrical fault on the high-resolution timing reference signal B — used by ignition and injection systems for precise crank angle measurement (typically a 60-2 or 36-1 tone wheel signal).
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Sensor or signal path failedCommon
Parts involved
- Camshaft Position Sensor
P0375 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.