How to Fix P1268 Cylinder #3 High to Low Side Short

Introduction

If you’re experiencing the P1268 error code on your vehicle, it means that there is a problem with the cylinder #3 high to low side short. This can be a frustrating issue to deal with, but fortunately, it’s something that can be fixed with a little bit of know-how and some basic tools. In this article, we’ll walk you through the steps you need to take to fix this problem and get your vehicle running smoothly again.

Step 1: Diagnose the Problem

Before you can fix the P1268 error code, you need to diagnose the problem. This can be done using an OBD-II scanner, which will give you a code that corresponds to the issue. In this case, the code will be P1268. Once you have the code, you can start to narrow down the problem.

Step 2: Check the Wiring

The most common cause of the P1268 error code is a problem with the wiring. Start by checking the wiring for cylinder #3. Look for any signs of damage, such as frayed wires or loose connections. If you find any issues, repair or replace the wiring as needed.

Step 3: Check the Injector

If the wiring looks good, the next step is to check the injector for cylinder #3. Start by disconnecting the injector and checking the resistance with a multimeter. The resistance should be between 11 and 18 ohms. If the resistance is outside of this range, replace the injector.

Step 4: Check the PCM

If the wiring and injector both look good, the problem may be with the PCM (powertrain control module). Start by checking the PCM for any signs of damage, such as corrosion or water damage. If the PCM looks good, you may need to have it reprogrammed or replaced.

Step 5: Clear the Code

Once you’ve fixed the problem, it’s important to clear the code from the OBD-II system. This can be done using an OBD-II scanner or by disconnecting the battery for a few minutes. Once the code is cleared, start the vehicle and make sure the P1268 error code doesn’t come back.

Conclusion

Fixing the P1268 error code may seem daunting, but with a little bit of know-how and some basic tools, it’s something that can be done at home. By following the steps outlined in this article, you can diagnose and fix the problem, and get your vehicle running smoothly again.

FAQs

1. Can I drive my vehicle with the P1268 error code?

It’s not recommended to drive your vehicle with the P1268 error code. This code indicates a problem with the cylinder #3 high to low side short, which can cause damage to your engine if left unchecked.

2. How much does it cost to fix the P1268 error code?

The cost to fix the P1268 error code will depend on the cause of the problem. If it’s a simple wiring issue, it may only cost a few dollars to fix. If the problem is with the injector or PCM, the cost could be several hundred dollars.

3. Can I fix the P1268 error code myself?

If you have some basic knowledge of car mechanics and the right tools, you can fix the P1268 error code yourself. However, if you’re not comfortable working on your vehicle, it’s best to take it to a professional mechanic.