How to Fix P1273 Cylinder #8 High to Low Side Short

Introduction

If you’re experiencing the P1273 error code on your vehicle, it means that there is a problem with the cylinder #8 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. 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: Check the Wiring

The first thing you should do when you encounter the P1273 error code is to check the wiring. This error code is often caused by a short in the wiring, so it’s important to make sure that all of the wiring is intact and properly connected. Start by inspecting the wiring around cylinder #8 and look for any signs of damage or wear. If you notice any issues, you’ll need to replace the damaged wiring.

Step 2: Check the Fuel Injector

If the wiring looks good, the next thing you should check is the fuel injector. The P1273 error code can also be caused by a faulty fuel injector, so it’s important to make sure that this component is working properly. Start by removing the fuel injector from cylinder #8 and inspecting it for any signs of damage or wear. If you notice any issues, you’ll need to replace the fuel injector.

Step 3: Check the Fuel Pressure

If the wiring and fuel injector both look good, the next thing you should check is the fuel pressure. The P1273 error code can also be caused by low fuel pressure, so it’s important to make sure that the fuel pressure is within the manufacturer’s recommended range. You can check the fuel pressure using a fuel pressure gauge. If the fuel pressure is too low, you’ll need to replace the fuel pump.

Step 4: Clear the Error Code

Once you’ve fixed the underlying issue causing the P1273 error code, you’ll need to clear the code from your vehicle’s computer. This can be done using an OBD-II scanner. Simply connect the scanner to your vehicle’s OBD-II port and follow the instructions to clear the error code.

Conclusion

Dealing with the P1273 error code can be frustrating, but with the right knowledge and tools, it’s something that can be fixed. By following the steps outlined in this article, you can identify and fix the underlying issue causing the error code and get your vehicle running smoothly again.

FAQs

1. Can I drive my vehicle with the P1273 error code?

It’s not recommended to drive your vehicle with the P1273 error code. This error code can cause damage to your vehicle’s engine if left unchecked, so it’s important to address the issue as soon as possible.

2. How much does it cost to fix the P1273 error code?

The cost to fix the P1273 error code will depend on the underlying issue causing the error code. If the issue is with the wiring, the cost will be relatively low. If the issue is with the fuel injector or fuel pump, the cost will be higher.

3. Can I fix the P1273 error code myself?

If you have experience working on vehicles and the right tools, you may be able to fix the P1273 error code yourself. However, if you’re not comfortable working on vehicles or don’t have the right tools, it’s best to take your vehicle to a professional mechanic.