Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)
The exhaust camshaft timing actuator on Bank 1 has lost electrical connection or is not responding properly, similar to a light switch that won't turn the light on. This prevents the engine from adjusting valve timing for optimal performance and emissions control.
The ECM monitors the camshaft position actuator solenoid circuit for proper voltage and current response. It expects the solenoid to engage/disengage within milliseconds when commanded, and detects an open circuit or excessive resistance in the wiring or solenoid coil.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Solenoid coil resistance | 6-9 ohms | Open circuit (infinite resistance) or >15 ohms |
| Circuit voltage response | Voltage drops within 100ms of command | No voltage drop or delayed response |
Code P0013 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0013 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.