Camshaft Position Sensor B Circuit High Input (Bank 2)
The ECU detects that the camshaft position sensor on Bank 2 is sending a voltage signal that's too high, like a radio stuck on maximum volume. This prevents the engine from timing fuel injection and spark correctly.
The ECU monitors the voltage output from the camshaft position sensor B on Bank 2, expecting a signal within a normal range (typically 0.5–4.5V). When the voltage reads abnormally high, it indicates a wiring short, faulty sensor, or PCM input malfunction. The ECU cannot accurately determine camshaft position for proper fuel and ignition timing.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Camshaft Sensor B Voltage (Bank 2) | 0.5 – 4.5 V | > 4.8 V or open circuit |
| Signal Frequency | Synchronized with crankshaft | No signal or constant high state |
Code P0368 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, P0368 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.