P0375 Fault Code

Timing Reference High Resolution Signal B Malfunction

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0375 fault code indicates a malfunction in the timing reference high-resolution signal B. This signal is crucial for the engine's management system as it provides precise timing information needed for optimal engine performance. When this code is triggered, it signifies issues with the components responsible for this signal, potentially impacting engine efficiency and performance.

What are the symptoms of the P0375 code?

Drivers may notice various symptoms when the P0375 code is present, such as:

• Engine misfiring or running roughly.
• Reduced engine power or performance.
• Warning lights illuminated on the dashboard, particularly the check engine light.
• Difficulty starting the engine or stalling while driving.

What causes the P0375 code?

Common causes of the P0375 code include:

• Faulty crankshaft position sensor or camshaft position sensor.
• Damaged wiring or connectors in the timing circuit.
• Issues with the engine control module (ECM) or powertrain control module (PCM).
• Timing belt or chain problems, such as misalignment or wear.
• Poor connections due to corrosion or dirt.

How to fix P0375?

To resolve the P0375 fault code, a technician may:

• Inspect and test the crankshaft and camshaft position sensors for proper functionality.
• Check wiring and connectors for damage, corrosion, or improper connections.
• Examine the condition of the timing belt or chain and replace if necessary.
• Reprogram or replace the ECM/PCM if identified as faulty.
• Clear the fault code and verify that the problem does not reoccur through a test drive.