P0811 OBD-II Trouble Code: Excessive Clutch Slippage

P0811 code definition

The P0811 code refers to excessive clutch slippage.

What the P0811 code means

The powertrain control module has found that there is a problem in the clutch position sensor circuit, also known as the clutch start switch. This code will only affect vehicles that have a manual transmission. If it is present in a vehicle that has an automatic transmission, it is likely a problem with the powertrain control module.

What causes the P0811 code?

The following are some of the most common causes of the P0811 code:

• Faulty clutch position sensor
• Corroded, shorted, or open wiring
• Corroded, shorted, or open electrical connectors
• Faulty powertrain control module, although this is rare

What are the symptoms of the P0811 code?

Vehicles that have the P0811 code stored will often find that it is difficult to start the engine, or even impossible to start the engine. In other cases, the vehicle might start without the clutch depressed. In addition, drivers will notice that their Check Engine Light will turn on and the code will be stored.

How does a mechanic diagnose the P0811 code?

To diagnose the P0811 code, mechanics make use of their expertise and a device called an OBD-II scanner. The scanner connects to the vehicle’s onboard computer and gathers data regarding the codes and the vehicle. The information that the scanner provides makes it easier for the mechanic to diagnose the vehicle and to figure out the best ways to proceed with a repair to fix the code.

Common mistakes when diagnosing the P0811 code

One of the most common mistakes when trying to diagnose the P0811 is blaming the started/solenoid instead. Most of the time in these cases, it will actually be the clutch position sensor instead.

How serious is the P0811 code?

Although some people might not notice any issues with their vehicle when they have the P0811 code present, that’s not the case with most. Many times, it will be more difficult to start the vehicle. They might not be able to start it at all. You don’t want to struggle with your vehicle every time you try to start it. Make the time to bring your vehicle to a mechanic who can diagnose it and repair it for you.

What repairs can fix the P0811 code?

Here are some repairs the mechanics can use to get fix the P0811 code:

• Visually inspect the wiring and electrical connectors to make sure that they are not frayed, corroded or disconnected, and make repairs as needed
• Replace the clutch position sensor
• Replace the powertrain control module if it is faulty

Additional comments for consideration regarding the P0811 code

Whether you have a brand new vehicle or an older vehicle, you need to make sure you are taking proper care of it. This means paying attention to the mechanical needs of the vehicle. If your car or truck has codes stored, even if it seems to be driving fine right now, it is important to take it to a mechanic. They can diagnose the vehicle properly and provide you with the repairs that it needs to stay on the road. Keeping the vehicle in shape should also give you more peace of mind while you are behind the wheel.

Need help with a P0811 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.