How to Fix P1206 Injector Circuit Open/Shorted – Cylinder #1

Introduction

If you’re experiencing the P1206 error code on your vehicle, it means that there is an issue with the injector circuit for cylinder #1. This can cause a variety of problems, including reduced engine performance and fuel efficiency. Fortunately, with a little bit of knowledge and some basic tools, you can fix this issue yourself.

Step 1: Check the Wiring

The first thing you should do when trying to fix the P1206 error code is to check the wiring for the injector circuit. Start by inspecting the wiring harness for any signs of damage or wear. Look for frayed wires, loose connections, or any other issues that could be causing a short circuit.

If you find any issues with the wiring, you’ll need to repair or replace it. This may involve splicing in a new section of wire, or replacing the entire harness. Be sure to use the appropriate gauge of wire and connectors for your vehicle.

Step 2: Check the Injector

If the wiring checks out, the next step is to check the injector itself. Start by disconnecting the electrical connector from the injector. Then, use a multimeter to check the resistance across the injector terminals. The resistance should be within the manufacturer’s specifications.

If the resistance is outside of the acceptable range, you’ll need to replace the injector. This may involve removing the fuel rail and other components to access the injector. Be sure to follow the manufacturer’s instructions and use the appropriate tools for your vehicle.

Step 3: Check the PCM

If the wiring and injector are both in good condition, the issue may be with the Powertrain Control Module (PCM). Start by checking the PCM for any error codes related to the injector circuit. If there are no codes, you may need to perform a more thorough diagnostic test using a scan tool.

If the PCM is found to be faulty, you’ll need to replace it. This is a more complex repair that may require special tools and knowledge. Be sure to follow the manufacturer’s instructions and use the appropriate replacement part for your vehicle.

Conclusion

Fixing the P1206 error code can be a challenging task, but with the right tools and knowledge, it’s possible to do it yourself. By following these steps and taking the time to diagnose the issue properly, you can get your vehicle back on the road and running smoothly.

FAQs

1. Can I drive my vehicle with the P1206 error code?

It’s not recommended to drive your vehicle with the P1206 error code, as it can cause reduced engine performance and fuel efficiency. It’s best to address the issue as soon as possible to avoid further damage.

2. How much does it cost to fix the P1206 error code?

The cost of fixing the P1206 error code can vary depending on the cause of the issue and the make and model of your vehicle. DIY repairs can save you money, but more complex repairs may require professional assistance.

3. How can I prevent the P1206 error code from happening again?

Regular maintenance and inspections can help prevent the P1206 error code from happening again. Be sure to follow the manufacturer’s recommended maintenance schedule and address any issues as soon as they arise.