This code means the Powertrain Control Module (PCM) is detecting a low voltage or an open circuit in the electrical system controlling the "A" camshaft position actuator. This actuator is part of the variable valve timing (VVT) system. It adjusts the timing of the camshaft to optimize engine performance and efficiency. A malfunction prevents proper adjustment.
Possible causes include:
* Faulty "A" camshaft position actuator: This is the most likely culprit. The actuator itself might be failing mechanically or electrically.
* Wiring problems: Damaged, shorted, or corroded wiring in the circuit leading to or from the actuator. This includes connectors.
* PCM (Powertrain Control Module) issue: Although less common, a problem with the PCM itself could be causing the code.
* Low battery voltage: A weak battery can sometimes trigger this code.
* Oil pressure problems: Insufficient oil pressure could affect the actuator's operation.
It's crucial to have a mechanic diagnose the specific cause. Simply replacing the actuator without checking the wiring or other potential problems might not fix the issue. A professional can use a scan tool to read the code, check voltage and continuity in the circuit, and perform other diagnostic tests to pinpoint the problem accurately.
