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 sensor that helps it know the position of a part called the camshaft. This code means that the sensor isn't sending the right signals to the car's computer, kind of like a walkie-talkie with low battery.
The P23F0 code indicates that the signal from the camshaft position sensor B on bank 2 is lower than expected by the engine control module (ECM).
The camshaft position sensor monitors the position and speed of the camshaft. The ECM uses this information to control fuel injection and ignition timing. When the signal from camshaft position sensor B on bank 2 is lower than the threshold set by the ECM, the P23F0 code is triggered.
• Check Engine Light is on
• Engine may run rough or misfire
• Poor fuel economy
• Faulty camshaft position sensor
• Wiring issues or poor connections in the sensor circuit
• ECM malfunction
Camshaft: A shaft in the engine that controls the opening and closing of the engine's valves.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections for damage or corrosion.
• Test the camshaft position sensor with a multimeter.
• Replace the camshaft position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain engine wiring.
• Ensure sensors are clean and properly connected.
• Follow the vehicle's maintenance schedule.
Sensor Issue
• Do not ignore the Check Engine Light.
• Seek professional diagnostic services if unsure.
• Regular maintenance can prevent sensor issues.
Check your vehicle's warranty for coverage on sensor replacements.
Camshaft position sensor issues have been common in vehicles with high mileage or poor maintenance history.
Moderate – While the vehicle may still run, it can lead to poor performance and increased fuel consumption.
Driving with a faulty sensor can lead to increased emissions and may not comply with local emissions regulations.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The camshaft position sensor B on bank 2 is typically located near the camshaft on the engine's cylinder head on the side opposite the timing belt or chain.
Q: Can I drive with a P23F0 code?
A: It's possible to drive, but not recommended as it can lead to further engine issues.
Q: How do I know if my camshaft sensor is bad?
A: Symptoms include rough idling, stalling, and reduced engine performance.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector 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.