Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This error means that a part of the engine that helps control the timing of the moving parts isn't getting enough power to work properly.
The P104A code indicates a problem with the electrical circuit that controls the shutoff valve for the camshaft timing pressure accumulator. This circuit is reading a lower voltage than expected.
The camshaft position timing pressure accumulator shutoff valve is responsible for controlling the oil pressure used to adjust the camshaft timing. If the control circuit for this valve is reading low, it could mean there's an issue with the wiring, the valve itself, or the power supply to the circuit.
• Check Engine Light illuminated
• Poor engine performance
• Rough idling
• Faulty camshaft position timing pressure accumulator shutoff valve
• Open or shorted wiring in the circuit
• Poor electrical connection at the valve or control module
Camshaft: A shaft in the engine that controls the opening and closing of the intake and exhaust valves.
Accumulator: A device that stores energy, in this case, oil pressure for camshaft timing.
• Use a scan tool to verify the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the voltage and continuity of the circuit.
• Repair or replace damaged wiring or connectors.
• Replace the camshaft position timing pressure accumulator shutoff valve if faulty.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scan tool
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance and inspection of engine components.
• Ensure electrical connections are clean and secure.
• Use quality parts for replacements.
Sensor Issue
• Have a professional mechanic diagnose the issue.
• Do not ignore the Check Engine Light.
Check with your vehicle manufacturer for specific warranty coverage related to engine components.
This code has been associated with issues in vehicles using advanced camshaft timing systems.
Moderate – It should be addressed soon to avoid potential engine performance issues.
Driving with a malfunctioning camshaft timing system can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The camshaft position timing pressure accumulator shutoff valve is typically located near the camshaft in the engine bay.
Q: Can I drive with a P104A code?
A: It's not recommended to drive for extended periods with this code as it can affect engine performance.
Q: How do I clear a P104A code?
A: After repairs, use an OBD-II scanner to clear the code and verify it doesn't return.
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