P0806 OBD-II Trouble Code: Clutch Position Sensor Circuit Range/Performance Malfunction

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Cost of diagnosing the P0806 code

P0806 is a diagnostic trouble code (DTC) for "Clutch Position Sensor Circuit Range/Performance Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0806 code definition

The P0806 code means that the car’s computer has noted a malfunction in the clutch position sensor and/or sensor circuit.

What the P0806 code means

If your car’s computer has stored the P0806 code, it means there has been a malfunction with the clutch position sensor or sensor circuit. Note that this only pertains to vehicles with manual transmissions. If the code is present in a car with an automatic transmission, there is likely a problem with the PCM itself. This code indicates that the voltage reading from the clutch position sensor is either higher or lower than the automaker’s settings.

What causes the P0806 code?

The P0806 code can be caused by a number of potential problems, including the following:

  • Failure of the clutch position sensor
  • An open or short in the clutch position sensor circuit
  • A misadjusted clutch position sensor (often after replacement)
  • A loose or corroded connector or damaged wiring within the clutch position sensor circuit
  • A failed PCM (rare)

What are the symptoms of the P0806 code?

Symptoms of the P0806 code can vary greatly from one vehicle to another, but include the following:

  • No symptoms, including no Check Engine Light (code is stored as pending)
  • No start
  • Engine starts with the key turned and without the clutch pedal pushed in
  • Check Engine Light on

How does a mechanic diagnose the P0806 code?

The first thing a mechanic should do is check the codes stored in the car’s computer with a handheld OBD II scanner. Those codes should be recorded, and then cleared, and the vehicle should be test driven to determine if the codes will return. If they do not, it may be an intermittent problem.

The mechanic should then inspect the adjustment of the clutch position sensor. This is particularly true if the sensor was recently replaced, as maladjustment is a common cause of the P0806 code. It is also important for the mechanic to inspect the connections within the clutch position sensor circuit for corrosion, as well as checking for damaged or broken wiring.

A mechanic should test for voltage on both the input and output side of the sensor. If voltage is only present on the input side, the sensor itself is the issue (either incorrectly adjusted or failed), and will need to be readjusted or replaced. If there is voltage on both sides of the sensor, then the problem lies within the wiring harness and connectors. In very rare instances, the PCM may need to be replaced, but this is uncommon.

Common mistakes when diagnosing the P0806 code

Common mistakes made when attempting to diagnose the P0806 code include replacing the starter or the starter solenoid or relay. The no start condition that is often present can make it seem as though the issue is related to the starter, but this may not be the case. In this instance, replacing the starter, starter solenoid or starter relay will have no effect.

How serious is the P0806 code?

The severity of the P0806 code varies depending on the symptoms you’re experiencing. In some cases, you may not even see a Check Engine light. In others, the car won’t start. However, because it can affect the drivability of your vehicle, it is important to have it diagnosed and repaired as soon as possible.

What repairs can fix the P0806 code?

The most common repair for the P0806 code is replacing the clutch position sensor or readjusting the sensor. However, other repairs can include repairing damaged wiring, cleaning corroded connectors and (rarely) replacing the PCM.

Additional comments for consideration regarding the P0806 code

While the no start symptom often associated with the P0806 code may make it seem as though the starter is the problem, a proper diagnosis will show that it is the sensor or the sensor circuit in most instances.

Need help with a P0806 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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Anthony

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Anthony
6 years of experience
Jeep Grand Cherokee - Check Engine Light is on - Carmichael, California
Anthony was great! We are very happy that we chose to go with this company instead of the overpriced and slow service we get from the Jeep dealership. He was on time and did the job just as expected. He identified a couple of other things that need to be done before the problems get worse. We appreciate having a technician give us direct feedback regarding our vehicle, rather than a service advisor (salesperson) that we've had to deal with in the past at the dealership. We'll be booking the addtional services very soon and will definitely request Anthony again now that he is familiar with our vehicle!

Michael

37 years of experience
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Michael
37 years of experience
Subaru Forester - Check Engine Light is on - Santa Fe Springs, California
Michael was punctual and courteous. He knows what he’s doing and I would absolutely recommend him to anyone.

Anthony

6 years of experience
18 reviews
Anthony
6 years of experience
BMW 740Li - Check Engine Light is on - Roseville, California
Very helpful in finding out the fault codes in my bmw 740 li. It was simple fix and that the two tube hose just had to be connected and my drive train malfunction went away. This saved me from having to go the an expensive dealership. Anthony has a good attitude about his work.

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19 years of experience
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Breck
19 years of experience
Ram 1500 - Check Engine Light is on - Houston, Texas
Breck did a great job working on my truck. Showed up on time, found any issues I had on my truck and explained everything to me so that I understood what was going on. Went above and beyond, definitely will book him for future appointments.


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