Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer isn't getting the right signals from the engine to know when to fire the spark plugs. It's like trying to play a song without knowing the rhythm.
The engine control module (ECM) relies on a timing reference signal to determine the precise timing for firing the spark plugs. P0374 indicates that the ECM is not receiving any pulses from the high-resolution signal A.
P0374 is set when the ECM detects a lack of pulses from the high-resolution timing reference signal A. This signal is crucial for the ECM to control engine timing accurately. A lack of signal can lead to misfiring or inefficient engine operation.
• Engine misfires
• Poor fuel economy
• Check Engine Light is on
• Faulty crankshaft position sensor
• Damaged wiring or connectors
• ECM failure
ECM: Engine Control Module, the computer that controls engine functions.
Crankshaft Position Sensor: A sensor that monitors the position and rotational speed of the crankshaft.
• Use an OBD-II scanner to confirm the code.
• Inspect the crankshaft position sensor and its wiring.
• Test the ECM for proper operation.
• Replace the crankshaft position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $500
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly inspect engine wiring for damage.
• Ensure sensors are clean and properly connected.
• Perform routine engine maintenance.
Sensor Issue
• Avoid driving with this code active to prevent engine damage.
• Consult a professional mechanic for accurate diagnosis.
Check your vehicle's warranty for coverage on engine sensors.
P0374 has been a common issue in vehicles with high mileage or poor maintenance.
High – This issue can lead to severe engine performance problems if not addressed promptly.
Driving with a malfunctioning engine sensor can lead to increased emissions and may not comply with local regulations.
• Engine at operating temperature
• Vehicle stationary
The crankshaft position sensor is typically located near the bottom of the engine, close to the crankshaft pulley.
Q: Can I drive my car with a P0374 code?
A: It's not recommended, as it can lead to engine misfires and potential damage.
Q: How can I prevent a P0374 code?
A: Regular maintenance and inspections of the engine sensors and wiring can help prevent this code.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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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.