Code Definition

P0375 — Timing Reference High Resolution Signal B Malfunction

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0375

P0375 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0375 is stored, the module has detected a signal or supply voltage higher than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0375 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The powertrain control module (PCM) sets this code when it detects an issue with the high-resolution timing reference signal 'B', typically generated by a secondary crankshaft or camshaft position sensor. This signal provides critical data for ignition timing and fuel injection synchronisation. A malfunction may be caused by an incorrect, missing, or erratic signal, leading to poor performance, misfires, rough idling, or engine stalling.

Quick Facts