Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is getting too many signals from a part that helps it know when to fire the spark plugs. It's like getting too many messages at once and getting confused.
The engine control module (ECM) is detecting more pulses than expected from the high-resolution timing reference signal B, which can confuse the engine timing.
The P0376 code indicates that the ECM has detected an excessive number of pulses from the high-resolution timing reference signal B. This signal is crucial for precise engine timing and synchronization. An incorrect number of pulses can lead to timing issues, affecting engine performance.
• Engine misfires
• Poor acceleration
• Check Engine Light illuminated
• Faulty sensor providing the timing signal
• Damaged or corroded wiring or connectors
• Faulty ECM or software glitch
ECM: Engine Control Module, the computer that controls engine functions.
OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the sensor providing the timing signal for proper operation.
• Replace the faulty sensor.
• Repair or replace damaged wiring or connectors.
• Update or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Ford F-150
• Regularly inspect and maintain engine wiring.
• Ensure sensors are clean and properly connected.
• Keep ECM software updated.
Sensor Issue
• Do not ignore the Check Engine Light.
• Get a professional diagnosis if unsure.
• Avoid driving long distances until fixed.
Check vehicle warranty for coverage on sensors and ECM issues.
This code has been associated with timing issues in various vehicles, often due to sensor or wiring faults.
Moderate – Should be addressed soon to avoid potential engine performance issues.
Ignoring this code can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in park or neutral
The timing sensor is typically located near the engine's crankshaft or camshaft.
Q: Can I drive my car with a P0376 code?
A: It's not recommended as it can lead to engine performance issues.
Q: What happens if I ignore the P0376 code?
A: Ignoring it can cause poor engine performance and increased emissions.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.