How to Fix P1269 Cylinder #4 High to Low Side Short

Introduction

If you’re experiencing the P1269 error code on your vehicle, it means that there is a problem with the cylinder #4 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 P1269 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 P1269. Once you have the code, you can start to narrow down the problem.

Step 2: Check the Wiring

The most common cause of the P1269 error code is a problem with the wiring. Start by checking the wiring for cylinder #4. 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 #4. 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 a burnt smell. If the PCM looks good, you can try resetting it by disconnecting the battery for a few minutes. If this doesn’t work, you may need to replace the PCM.

Step 5: Test Drive

Once you’ve fixed the problem, it’s important to test drive your vehicle to make sure everything is working properly. Take your vehicle for a spin and pay attention to how it feels and sounds. If everything seems normal, you’re good to go!

Conclusion

Fixing the P1269 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 with your vehicle’s cylinder #4 high to low side short.

FAQs

1. Can I drive my vehicle with the P1269 error code?

It’s not recommended to drive your vehicle with the P1269 error code. This code indicates a problem with the cylinder #4 high to low side short, which can cause damage to your engine if left unchecked.

2. How much does it cost to fix the P1269 error code?

The cost to fix the P1269 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, it could cost several hundred dollars.

3. Can I fix the P1269 error code myself?

Yes, you can fix the P1269 error code yourself if you have some basic tools and know-how. However, if you’re not comfortable working on your vehicle, it’s best to take it to a professional mechanic.