P0376 – OBD-II DTC

OBD-II DTC P0376 – Timing Reference High Resolution Signal B Malfunction

DTC P0376 meaning

DTC P0376 refers to a malfunction in the timing reference high-resolution signal B. This code indicates that the Engine Control Module (ECM) has detected an issue with the signal that is used to determine the position of the crankshaft or camshaft. The high-resolution signal is crucial for accurate timing of the engine’s ignition and fuel injection systems.

DTC P0376 symptoms

Common symptoms associated with DTC P0376 may include:

• Check Engine Light illuminated
• Engine misfires or runs rough
• Decreased engine performance
• Difficulty starting the engine
• Stalling or hesitation during acceleration

DTC P0376 causes

Several factors can lead to the triggering of DTC P0376, including:

• Faulty crankshaft or camshaft position sensors
• Damaged wiring or connectors related to the timing sensors
• Faulty Engine Control Module (ECM)
• Timing belt or chain issues
• Mechanical problems within the engine

DTC P0376 seriousness

DTC P0376 can be serious as it affects the engine’s timing, which is critical for proper operation. If left unaddressed, it may lead to:

• Increased emissions
• Severe engine damage
• Reduced fuel efficiency
• Potential safety hazards due to engine stalling

How to diagnose DTC P0376

To diagnose DTC P0376, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the crankshaft and camshaft position sensors for damage or wear.
4. Examine wiring and connectors for signs of corrosion or disconnection.
5. Test the sensors’ output using a multimeter to ensure they are functioning correctly.
6. Check the timing belt or chain for proper alignment and condition.
7. Perform a visual inspection of the engine for any mechanical issues.

How to fix DTC P0376 step-by-step instructions

To fix DTC P0376, follow these steps:

1. Clear the DTC using an OBD-II scanner.
2. Replace any faulty crankshaft or camshaft position sensors.
3. Repair or replace damaged wiring and connectors.
4. Ensure the timing belt or chain is properly aligned and in good condition.
5. Recheck the engine for any mechanical issues that may need addressing.
6. Start the engine and monitor for any reoccurrence of the DTC.

How to erase DTC P0376

To erase DTC P0376, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the engine to ensure the code does not return.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

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

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.