Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part called a camshaft that helps the engine run smoothly. There's a sensor that watches this part, and it's having trouble figuring out where the camshaft is.
The camshaft position sensor is unable to determine the position of the master camshaft, which can affect engine timing.
The P1377 code indicates that the camshaft position sensor is not receiving the correct signal to identify the position of the master camshaft. This can lead to issues with engine timing and performance.
• Check Engine Light is on
• Engine misfires or runs rough
• Poor acceleration or performance
• Faulty camshaft position sensor
• Wiring issues or poor connections
• Malfunctioning engine control module (ECM)
Camshaft: A rotating shaft within the engine that opens and closes the intake and exhaust valves.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code
• Inspect the camshaft position sensor and its wiring
• Test the sensor with a multimeter for proper voltage
• Replace the camshaft position sensor
• Repair or replace damaged wiring
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Honda Accord
• Toyota Camry
• Ford Focus
• Regular maintenance checks
• Ensure proper sensor installation
• Avoid harsh driving conditions
Sensor Issue
• Get the issue diagnosed and repaired promptly to avoid engine damage.
• Avoid driving the vehicle if the engine runs rough.
Check with your vehicle manufacturer for warranty coverage on sensors.
This code has been more common in older vehicle models with aging sensors.
Moderate – It should be addressed soon to prevent further engine issues.
Driving with a faulty camshaft position sensor can lead to safety issues and engine damage.
• Engine at operating temperature
• Vehicle at idle
The camshaft position sensor is typically located near the top of the engine, close to the camshaft.
Q: Can I drive with a P1377 code?
A: It's not recommended as it can lead to engine performance issues.
Q: How long does it take to fix a P1377 code?
A: Repairs can take a few hours, depending on the exact cause.
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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.