Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's computer is having trouble getting a signal from a part called the camshaft on one side of the engine. It's like trying to listen to a radio station that's not coming in clearly.
The engine control module (ECM) is not receiving a proper signal from the camshaft position sensor B on bank 2, indicating a possible circuit issue or open circuit.
The P23EF code is triggered when the ECM detects an issue with the signal from the camshaft position sensor B on bank 2. This could be due to a circuit malfunction or an open circuit, preventing the ECM from accurately determining the camshaft's position.
• Check Engine Light illumination
• Engine may run rough or stall
• Poor fuel economy
• Faulty camshaft position sensor B
• Open or shorted wiring in the camshaft sensor circuit
• Poor electrical connection at the camshaft sensor
ECM: Engine Control Module, the computer that controls engine functions.
Camshaft: A shaft in the engine that controls the opening and closing of the valves.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the camshaft position sensor B for proper operation.
• Replace the faulty camshaft position sensor B.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive to ensure repair.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• Toyota Camry
• Ford F-150
• Honda Accord
• Regularly inspect engine wiring for damage.
• Ensure connectors are clean and secure.
• Follow scheduled maintenance intervals.
Sensor Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for a thorough diagnosis.
Check if the vehicle's powertrain warranty covers sensor issues.
Camshaft position sensor issues have been common in vehicles with higher mileage or poor maintenance history.
Moderate – While the vehicle may still operate, it can lead to poor performance and increased fuel consumption.
Driving with a malfunctioning camshaft sensor can lead to engine performance issues and should be addressed promptly.
• Engine at operating temperature
• Vehicle in idle or low RPM
The camshaft position sensor B is typically located near the camshaft on the engine's bank 2, which is the side opposite the number one cylinder.
Q: Can I drive with a P23EF code?
A: It's not recommended as it can lead to poor engine performance and potential damage.
Q: How can I prevent a P23EF code?
A: Regular maintenance and inspection of engine components can help prevent this issue.
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