What is the P0806 fault number? What is the Clutch Position Sensor Circuit Range/Performance loss description? How to fix P0806 fault codes? What are the causes and symptoms of the P0806 error code?
What is the P0806 fault code? What does it mean
If the code P0806 has been stored in your vehicle’s computer, it indicates that there is an issue with the clutch pedal position sensor/sensor circuit. This code is valid only for vehicles with manual transmission. The code is invalid if it is used on an automatic transmission vehicle. This code indicates that the voltage from the clutch pedal position sensor doesn’t conform to the specifications set by the automaker.
The clutch position sensor is a secondary safety device that prevents the engine from starting while the vehicle is in gear. It is usually a toggle switch, which closes when the clutch pedal has been depressed and opens when it’s released. Although they are often mounted on the clutch pedal brackets, their design may vary by make and model. The switch’s one side has a constant voltage. When the clutch pedal presses, the contacts in the switch make contact with the starter motor or starter solenoid and send voltage. The circuit that allows the engine’s to run is complete. This basic circuit and switch prevents the engine’s start without depressing its clutch pedal.
The transmission control module, or TCM, can be used as a standalone module on some vehicles while it can also be integrated with the ECU / engine control module on other vehicles. These two modules can be combined into one module called the PCM (powertrain management module).
The PCM performs various calculations using signals from the vehicle speed sensors, transmission output speed sensor, or transmission input speed sensor. This is used to verify the position of the clutch pedal. If the PCM/TCM detects a voltage, resistance or performance problem in the clutch position sensor circuit beyond the expected range or sets a code P0806, the code is set.
P0806 fault codes can be found on vehicles made by Fiat Opel Peugeot Land Rover Range Rover Ford Ford Opel Opel Mercedes-Benz, Smart Mercedes, Mercedes-Benz, Opel and Toyota.
What causes the P0806 Fault code?
Below are some reasons to set fault code P0806:
- – Sensor to detect the clutch pedal position sensor is defective
- – Incorrectly calibrated clutch pedal position sensor
- – Short circuit, open, or damaged wires to sensor.
- – Fusible link or blown fuse (if applicable).
- – A PCM/TCM is defective or requires a reprogramming (rarely)
What are the symptoms of P0806 Malfunction code?
You may experience the following symptoms if your vehicle has the code P0806.
- – Illumination for the check engine light
- – The transmission warning light is on
- – It is possible that the vehicle will not start.
- – You can start the vehicle without pressing the clutch pedal
- – Increase or decrease engine speed when clutch is depressed
How do I fix the P0806 fault code?
When diagnosing this code, your mechanic should check the position sensor setting for clutch. This code may be caused by a sensor that was recently replaced. You should have your mechanic inspect the connections to the clutch position sensor circuit for corrosion and repair any damaged wires. Next, test both the input voltage and the output voltage of your sensor. The sensor may not have been properly inserted or it is defective if there is no voltage on the input side. The problem is with the wiring harness or connectors if there is voltage on both sides. In rare cases, the PCM may have to be replaced.
Repairing this code can be difficult because of the common errors in replacing the starter solenoid, starter relay, and starter motor. Although it may appear that something is wrong with your starter motor, you can replace these parts.
Some of the possible repairs that can resolve the P0806 fault code may include:
- – Replacing the clutch pedal position sensor
- – Recalibration of the clutch pedal position sensor
- Repair damaged or fused wires to the sensor and fix open or short circuit issues
- – Replacing or cleaning loose, rusty, and corroded connectors
- – Replace a blown fuse/fuse link (if applicable).
- – Reprogramming or replacement of TCM / PCM
How serious is the P0806 Fault code?
The severity of your symptoms will determine the severity of the P0806 code. Sometimes, symptoms are not apparent. In these cases, the check engine light may come on. If the problem is more severe, your vehicle might not start. This can cause your vehicle to not start. It is important that you fix the problem as soon as possible.
