How to Fix P1271 Cylinder #6 High to Low Side Short

Introduction

If you’re experiencing the P1271 error code on your vehicle, it means that there is a problem with the cylinder #6 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 P1271 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 P1271. Once you have the code, you can start to narrow down the problem.

Step 2: Check the Wiring

The most common cause of the P1271 error code is a problem with the wiring. Start by checking the wiring for cylinder #6. 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 Fuel Injector

If the wiring looks good, the next step is to check the fuel injector for cylinder #6. Start by disconnecting the fuel 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 fuel injector.

Step 4: Check the Fuel Injector Control Circuit

If the fuel injector looks good, the next step is to check the fuel injector control circuit. This circuit is responsible for controlling the fuel injector and ensuring that it’s delivering the right amount of fuel to the engine. Use a multimeter to check the voltage at the fuel injector control circuit. The voltage should be between 12 and 14 volts. If the voltage is outside of this range, there may be a problem with the fuel injector control circuit.

Step 5: Check the PCM

If all of the above steps check out, the problem may be with the PCM (powertrain control module). The PCM is responsible for controlling the fuel injector and ensuring that it’s delivering the right amount of fuel to the engine. Use an OBD-II scanner to check for any other error codes that may be related to the PCM. If you find any issues, replace the PCM.

Step 6: Clear the Error Code

Once you’ve fixed the problem, it’s important to clear the error code. This can be done using an OBD-II scanner. Clearing the error code will reset the system and ensure that the problem has been fixed.

Conclusion

Fixing the P1271 error code can be a frustrating experience, but with the right tools and know-how, 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 #6 high to low side short.

FAQs

1. Can I drive my vehicle with the P1271 error code?

It’s not recommended to drive your vehicle with the P1271 error code. This code indicates a problem with the fuel injector, which can cause damage to your engine if left unchecked.

2. How much does it cost to fix the P1271 error code?

The cost to fix the P1271 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 fuel injector or PCM, it could cost several hundred dollars.

3. Can I fix the P1271 error code myself?

Yes, the P1271 error code can be fixed at home with the right tools and know-how. However, if you’re not comfortable working on your vehicle, it’s best to take it to a professional mechanic.