SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation
Your engine's camshaft sensor isn't matching up with the crankshaft sensor—think of it like two dancers out of sync. The ECU can't properly time the fuel injectors and ignition, causing performance issues.
The ECU compares crankshaft position (CKP) and camshaft position (CMP) sensor signals to verify timing correlation. It expects the cam to be at a specific phase relative to crank rotation. If the signals deviate beyond tolerance, a fault is triggered.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| CMP-to-CKP Phase Correlation | Within 5° of expected offset | Deviation >5° or missing correlation |
| Sensor Signal Frequency Ratio | 1:2 (cam to crank) | Ratio inconsistent or absent |
Code P1350 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, P1350 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.