B1286 Servo Motor Potentiometer Airintake Left Circuit Short To Battery

How to Fix B1286 Servo Motor Potentiometer Airintake Left Circuit Short to Battery


If you’re experiencing the B1286 error code on your car, it means that there’s a problem with the servo motor potentiometer air intake left circuit. This can be caused by a short circuit to the battery, which can be a frustrating issue to deal with. However, with the right tools and knowledge, you can fix this problem yourself and save money on expensive repairs.

Step-by-Step Guide

Step 1: Check the Wiring

The first thing you should do is check the wiring for any signs of damage or wear. Look for any frayed wires or loose connections that could be causing the short circuit. If you find any issues, you’ll need to replace the damaged wiring.

Step 2: Check the Servo Motor Potentiometer

Next, you’ll need to check the servo motor potentiometer to see if it’s functioning properly. This component is responsible for controlling the air intake on your car, so if it’s not working correctly, it can cause the B1286 error code. Use a multimeter to test the potentiometer and make sure it’s sending the correct signals to the car’s computer.

Step 3: Replace the Servo Motor Potentiometer

If you’ve determined that the servo motor potentiometer is faulty, you’ll need to replace it. This can be a bit tricky, as the component is often located in a hard-to-reach area of the engine. However, with the right tools and some patience, you should be able to remove the old potentiometer and install a new one.

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Step 4: Clear the Error Code

Once you’ve replaced the faulty component, you’ll need to clear the error code from your car’s computer. This can be done using an OBD-II scanner, which can be purchased online or at your local auto parts store. Simply connect the scanner to your car’s OBD-II port and follow the instructions to clear the error code.

Useful Tips

– Always wear protective gear when working on your car, including gloves and safety glasses.
– Make sure you have the right tools for the job before you start working.
– Take your time and be patient – rushing can lead to mistakes and further damage to your car.
– If you’re not comfortable working on your car yourself, it’s always best to take it to a professional mechanic.


Dealing with the B1286 error code can be frustrating, but with the right knowledge and tools, you can fix the problem yourself. By following the steps outlined in this guide, you should be able to identify and fix the issue, saving yourself time and money in the process.


1. Can I drive my car with the B1286 error code?

It’s not recommended to drive your car with the B1286 error code, as it can cause further damage to your car’s engine. It’s best to fix the issue as soon as possible.

2. How much does it cost to fix the B1286 error code?

The cost of fixing the B1286 error code can vary depending on the make and model of your car, as well as the severity of the issue. However, fixing the problem yourself can save you money on expensive repairs.

3. How can I prevent the B1286 error code from happening again?

Regular maintenance and inspections of your car’s wiring and components can help prevent the B1286 error code from happening again. It’s also important to address any issues as soon as they arise to prevent further damage to your car.