Camshaft Position Sensor Circuit High (Bank 1)
The P0368 code indicates that the Engine Control Module (ECM) has detected a voltage signal from the camshaft position sensor on Bank 1 that is higher than the expected range. This sensor monitors the position of the camshaft relative to the crankshaft to optimize fuel injection and ignition timing. A high circuit condition typically means there is a short to voltage, a faulty sensor, or a wiring issue. This can cause drivability problems and may prevent the vehicle from starting.
1. Most Common Causes
- Faulty camshaft position sensor 'B' (internal open circuit)
- Signal circuit shorted to battery voltage or 5V reference
- Ground circuit open or high resistance
- Damaged, loose, or corroded sensor connector pins
- Mechanical misalignment of camshaft (jumped timing) or damaged reluctor ring
- Internal PCM failure (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine may run rough or misfire
- Hard starting or no start condition
- Reduced fuel economy
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the camshaft position sensor wiring and connector for damage or corrosion.
Step 3: Test the sensor's voltage and ground circuits using a multimeter.
Step 4: Check the sensor's signal output with a scan tool or oscilloscope.
Step 5: If all tests pass, replace the camshaft position sensor.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. The vehicle may stall or fail to start, and driving could cause further damage.
How much does it cost to fix?▼
Typically between $50 and $150 for parts and labor, depending on the vehicle and shop rates.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.