The engine computer can't communicate with the intake camshaft timing valve on the left side of the engine, like a broken wire between a light switch and the bulb. This prevents the engine from adjusting valve timing for optimal performance.
The ECM monitors electrical continuity and voltage signals from the camshaft position actuator solenoid circuit on Bank 1. It expects to see valid command signals and feedback within specific voltage ranges during operation. An open circuit means no current flow is detected when the solenoid should be energized.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Solenoid Control Voltage | 9-14V (energized), <0.5V (de-energized) | Open circuit detected or no voltage change |
| Solenoid Resistance | 6-12 ohms (typical coil resistance) | >∞ ohms (open) or no continuity |