Camshaft Position Sensor "A" Circuit Low Input (Bank 1)
The CMP signal voltage is below the lower threshold. Most often a sensor with degraded internal output or a short to ground.
Affected components
- Camshaft position sensor
- Camshaft position sensor wiring
Common causes
- High likelihood: Sensor failed
- Medium likelihood: Signal shorted to ground
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.