Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer is having trouble reading a signal from a sensor that helps it know when to fire the spark plugs at the right time.
The P0370 code indicates a problem with the high-resolution signal from the timing reference sensor, which is crucial for accurate engine timing.
The P0370 code is triggered when the Engine Control Module (ECM) detects an issue with the high-resolution signal from the timing reference sensor (often a crankshaft or camshaft position sensor). This signal is essential for the ECM to determine the precise timing for fuel injection and ignition.
• Engine misfires
• Poor fuel economy
• Check Engine Light illuminated
• Faulty timing reference sensor
• Damaged wiring or connectors
• ECM malfunction
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the timing reference sensor and its wiring for damage.
• Test the sensor's output signal with a multimeter.
• Replace the faulty timing reference sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly inspect and maintain engine sensors.
• Ensure wiring and connectors are in good condition.
• Keep the ECM updated with the latest software.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult a professional mechanic for accurate diagnosis and repair.
Check if the vehicle's powertrain warranty covers sensor-related repairs.
P0370 has been a common code in vehicles with electronic ignition systems, especially in older models.
Moderate – Addressing this issue promptly can prevent engine performance problems.
Ignoring this code may lead to increased emissions and reduced vehicle performance.
• Engine running at idle
• Vehicle at operating temperature
The timing reference sensor is typically located near the crankshaft or camshaft, depending on the vehicle model.
Q: Can I drive with a P0370 code?
A: It's not recommended to drive with this code as it can lead to engine performance issues.
Q: How do I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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.
View on Amazon
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.
View on Amazon
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.
View options on Amazon
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.