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 is having trouble reading the signals from the engine that help it know when to fire the spark plugs. It's like trying to listen to a song on a scratched CD that skips a lot.
The engine control module (ECM) relies on signals from the crankshaft position sensor to determine the timing of the engine's firing sequence. Code P0373 indicates that these signals are intermittent or erratic.
P0373 is triggered when the ECM detects an irregular or erratic signal from the high-resolution timing reference sensor, typically the crankshaft position sensor. This sensor provides critical data for engine timing and firing order. When the signal is inconsistent, it can affect engine performance.
• Engine misfires
• Poor acceleration
• Check Engine Light illuminated
• Faulty crankshaft position sensor
• Damaged wiring or connectors
• ECM malfunction
ECM: Engine Control Module
Crankshaft Position Sensor: A sensor used to monitor the position or rotational speed of the crankshaft.
• Inspect the crankshaft position sensor and its wiring for damage.
• Check for loose or corroded connectors.
• Test the sensor's signal with an oscilloscope.
• Replace the faulty crankshaft position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Oscilloscope
$150 - $400
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly inspect and maintain engine sensors.
• Keep electrical connections clean and secure.
• Perform routine engine diagnostics.
Sensor Issue
• Avoid driving with a misfiring engine to prevent damage.
• Get the issue diagnosed and repaired promptly.
• Regular maintenance can help prevent sensor issues.
Sensor-related issues may be covered under powertrain warranty. Check with your vehicle manufacturer.
This code has been associated with sensor failures and wiring issues in vehicles with high mileage.
Moderate – While the vehicle may still operate, ignoring this issue can lead to more severe engine problems.
Driving with a malfunctioning engine sensor can lead to reduced performance and increased emissions, which may not comply with legal standards.
• Engine at operating temperature
• Vehicle in park or neutral
The crankshaft position sensor is typically located near the bottom of the engine, close to the crankshaft pulley.
Q: Can I drive with a P0373 code?
A: It's not recommended to drive for long periods with this code active, as it can lead to engine performance issues.
Q: How do I know if my crankshaft sensor is bad?
A: Symptoms include engine misfires, poor acceleration, and the Check Engine Light turning on.
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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.
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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.