DTC Code P0375 – What does this code mean?

<ul> <li><a href="/problems/engine-warning-light-on"><b>Engine Light ON</b></a>: The check engine light or service engine soon warning light illuminates on the dashboard, indicating a potential issue with the engine's timing reference high resolution signal 'B'. This can be linked to a malfunction in the timing reference sensor or related circuitry.</li> </ul>

<ul><li>The Timing Reference Optical Sensor harness may be open or shorted, disrupting the signal transmission.</li><li>Poor electrical connections in the Timing Reference Optical Sensor circuit can lead to signal malfunctions.</li><li>A faulty Timing Reference Optical Sensor can cause incorrect timing signals, affecting engine performance.</li><li>A damaged Powertrain Control Module (PCM) can misinterpret or fail to process the timing signals correctly.</li></ul>

<ul> <li><b>Verify DTC Code</b>: Ensure the DTC P0375 is active by using a diagnostic scanner. Clear the code and perform a test drive to see if it returns.</li> <li><b>Inspect Wiring and Connectors</b>: Check the wiring and connectors related to the timing reference high-resolution signal 'B' for any signs of damage, corrosion, or disconnection.</li> <li><b>Examine the Crankshaft Position Sensor</b>: Inspect the crankshaft position sensor for any physical damage or misalignment. Ensure it is properly mounted and connected.</li> <li><b>Test the Crankshaft Position Sensor</b>: Use a multimeter to test the resistance and output voltage of the crankshaft position sensor to ensure it is within the manufacturer's specifications.</li> <li><b>Check the Timing Chain/Belt</b>: Inspect the timing chain or belt for wear or misalignment that could affect the timing reference signal.</li> <li><b>Evaluate the Engine Control Module (ECM)</b>: If all other components are functioning correctly, consider testing the ECM for faults or errors in processing the timing reference signal.</li></ul>

<p>The DTC code P0375 indicates a <b>Timing Reference High Resolution Signal 'B' Malfunction</b>. This is a <b>critical</b> issue as it affects the engine's timing and synchronization, potentially leading to severe engine damage or failure. Immediate attention is required to prevent further complications, such as misfires or stalling, which can compromise vehicle safety and performance.</p>