Camshaft Position Sensor A Circuit (Bank 2)
The engine computer can't read the camshaft position sensor on the right side of the engine (Bank 2), similar to losing one eye's vision so your depth perception suffers. Without this signal, the engine can't properly time fuel injection and ignition.
The ECM monitors voltage signals from the camshaft position sensor on Bank 2 to synchronize fuel injection and spark timing with valve opening. The sensor should produce a clean digital or analog signal at specific RPM intervals; a missing, weak, or erratic signal triggers the fault code.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Sensor Signal Voltage | 0.5–4.5V varying with cam rotation | No signal, constant voltage, or voltage out of range |
| Signal Frequency/Timing | Synchronized pulses matching crankshaft position | Missing pulses or signal dropout detected |
Code P0345 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, P0345 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.