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P0373 – BMW DTC

BMW DTC P0373 – Timing Reference High Resolution Signal ‘A’ Intermittent/Erratic Pulses

DTC P0373 meaning on BMW

DTC P0373 on a BMW indicates an issue with the Timing Reference High Resolution Signal ‘A’ being intermittent or erratic. This signal is crucial for the engine control module to accurately determine the engine’s timing.

BMW DTC P0373 symptoms

Symptoms of DTC P0373 on a BMW may include:

  • Engine misfires
  • Rough idling
  • Decreased fuel efficiency
  • Engine stalling
  • Illuminated check engine light

BMW DTC P0373 causes

Common causes of DTC P0373 on a BMW include:

  • Faulty crankshaft position sensor
  • Wiring or connection issues in the timing reference signal circuit
  • Engine timing chain or belt problems
  • Engine control module (ECM) issues

BMW DTC P0373 seriousness

Ignoring DTC P0373 on a BMW can lead to potential engine performance issues and further damage. It is recommended to address this fault promptly to prevent more severe problems.

How to diagnose DTC P0373 on BMW

To diagnose DTC P0373 on a BMW, you can perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault code and related data.
  2. Inspect the crankshaft position sensor and its wiring for any visible damage.
  3. Check the engine timing components for proper alignment and condition.
  4. Test the timing reference signal circuit for continuity and proper voltage.

How to fix DTC P0373 on BMW

To fix DTC P0373 on a BMW, you can try the following solutions:

  1. Replace the faulty crankshaft position sensor if found defective.
  2. Repair any damaged wiring or connections in the timing reference signal circuit.
  3. Address any issues with the engine timing chain or belt.
  4. If necessary, reprogram or replace the engine control module (ECM).

How to erase DTC P0373 on BMW

To erase DTC P0373 on a BMW, you can clear the fault code using a diagnostic scanner. After fixing the underlying issue causing the fault code, clearing it will reset the check engine light and monitor the system for any recurring problems.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

← All BMW Diagnostic Trouble Codes

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