Camshaft Position Sensor Circuit Low (Bank 2)
The P0392 code indicates that the Engine Control Module (ECM) has detected a low voltage signal from the camshaft position sensor on Bank 2. This sensor monitors the position of the camshaft relative to the crankshaft to optimize fuel injection and ignition timing. A low circuit condition typically means the signal voltage is below the expected range, often due to a faulty sensor, wiring issues, or a poor electrical connection. This can cause drivability problems and may trigger the check engine light.
01. Most Common Causes
- Faulty camshaft position sensor (Bank 2)
- Damaged or corroded wiring/connectors
- Short to ground in the sensor circuit
- ECM failure (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Hard starting or stalling
- Reduced engine performance and fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the camshaft position sensor and wiring for damage or corrosion.
Step 3: Test sensor voltage and ground at the connector using a multimeter.
Step 4: If voltage is low, check for shorts or opens in the circuit; replace sensor if faulty.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the engine may stall or run poorly, potentially causing further damage.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, depending on the vehicle and shop rates.