Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a sensor in the engine is not sending the right signals. It's like when a light switch doesn't work properly, so the light doesn't turn on.
The P264C code indicates a problem with the electrical circuit for the rocker arm actuator position sensor on bank 1 of the engine. The sensor is reporting a low voltage condition.
The rocker arm actuator position sensor monitors the position of the rocker arm actuator, which controls the opening and closing of the engine's valves. When the sensor circuit voltage is lower than expected, the engine control module (ECM) triggers the P264C code.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty rocker arm actuator position sensor
• Wiring issues such as shorts or poor connections
• Faulty ECM
ECM: Engine Control Module
VTEC: Variable Valve Timing and Lift Electronic Control
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the rocker arm actuator position sensor for proper voltage and resistance.
• Replace the rocker arm actuator 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
• Honda Accord
• Honda Civic
• Acura TSX
• Regularly inspect and maintain engine wiring.
• Use high-quality engine oil.
• Follow the vehicle's maintenance schedule.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have your vehicle inspected by a professional mechanic.
• Avoid driving aggressively until the issue is resolved.
Check if the vehicle's powertrain warranty covers sensor issues.
This code is commonly associated with Honda vehicles and often relates to issues with the VTEC system.
Moderate – It's important to address this issue soon to prevent further engine performance problems.
Driving with a malfunctioning sensor can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle at idle
The rocker arm actuator position sensor is typically located on the top of the engine, near the cylinder head on bank 1.
Q: Can I drive with a P264C code?
A: It's not recommended to drive for long periods with this code, as it can lead to engine performance issues.
Q: How can I reset the Check Engine Light?
A: After repairs, you can use an OBD-II scanner to clear the code and reset the light.
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