Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble getting a signal from a part that helps control the engine's timing. It's like trying to watch TV with a broken antenna.
The engine control module (ECM) is not receiving a proper signal from the camshaft position sensor B on bank 1, which affects engine timing.
P23EC indicates an issue with the camshaft position sensor B circuit on bank 1. This sensor provides critical data to the ECM about the camshaft's position, which is essential for precise engine timing and operation. An open circuit or faulty sensor can disrupt this communication.
• Check Engine Light illuminated
• Engine misfires or runs rough
• Poor fuel economy
• Difficulty starting the engine
• Faulty camshaft position sensor B
• Open or shorted wiring in the sensor circuit
• Poor electrical connection at the sensor
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• 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.
• Check the ECM for faults.
• Replace the camshaft position sensor B if faulty.
• Repair or replace damaged wiring or connectors.
• Ensure all connections are secure and free of corrosion.
• Replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain wiring and connectors.
• Replace sensors at recommended intervals.
• Keep the ECM updated with the latest software.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving the vehicle aggressively until repaired.
Check with the vehicle manufacturer for warranty coverage on engine sensors.
This code has been associated with sensor failures and wiring issues in various vehicle models.
Moderate – While the vehicle may still run, ignoring the issue can lead to more significant engine problems.
Driving with a malfunctioning engine sensor can lead to increased emissions and potential safety risks.
• Engine at operating temperature
• Vehicle in park or neutral
The camshaft position sensor B is typically located near the top of the engine, on the cylinder head of bank 1.
Q: Can I drive with a P23EC code?
A: While the car may still run, it's not recommended to drive for extended periods as it can cause further damage.
Q: How can I reset the Check Engine Light?
A: After fixing the issue, use an OBD-II scanner to clear the code. If the problem is resolved, the light should stay off.
High-End · Full-system diagnostics
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Network faults often require full-system access instead of a generic code reader alone.
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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.