Clutch Position Sensor Circuit Range/Performance
The P0806 code indicates that the Powertrain Control Module (PCM) has detected an abnormal signal from the clutch position sensor, which monitors the position of the clutch pedal. This sensor is critical for systems like cruise control, start/stop, and transmission control. The code sets when the sensor signal is out of expected range or performance, often due to mechanical or electrical issues.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Cruise control inoperative
- Engine start/stop system malfunction
- Transmission shifting issues (if applicable)
2. Most Common Causes
- Faulty or worn clutch position sensor
- Open, shorted, or high-resistance wiring in the sensor circuit
- Corroded, loose, or moisture-damaged sensor connector
- Incorrect clutch position sensor adjustment
- Internal PCM failure (less common)
- Mechanical issues with the clutch pedal mechanism
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Visually inspect clutch position sensor, wiring, and connectors for damage or corrosion.
Step 3: Test sensor voltage and resistance with a multimeter per manufacturer specs.
Step 4: Check clutch pedal adjustment and operation; adjust if necessary.
Step 5: If sensor and wiring are good, replace the clutch position sensor.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, but you may lose cruise control and start/stop features. If transmission shifting is affected, drive cautiously and repair promptly.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, but can vary by vehicle. DIY sensor replacement is often under $50.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.