How to Fix P1210 Injector Circuit Open/Shorted – Cylinder #3

Introduction

If you’re experiencing the P1210 error code on your vehicle, it means that there is an issue with the injector circuit for cylinder #3. This can cause a variety of problems, including reduced engine performance, misfires, and even stalling. 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 you encounter the P1210 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 don’t see any obvious issues with the wiring, you can use a multimeter to test the resistance of the circuit. Set the multimeter to the ohms setting and touch the probes to the injector connector and the engine control module (ECM) connector. The resistance should be between 0.1 and 5 ohms. If the resistance is outside of this range, there may be a problem with the wiring.

Step 2: Check the Injector

If the wiring checks out, the next step is to check the injector itself. Start by removing the injector from cylinder #3. Inspect the injector for any signs of damage or wear, such as cracks or leaks. If the injector looks damaged, it will need to be replaced.

Next, you can use a multimeter to test the resistance of the injector. Set the multimeter to the ohms setting and touch the probes to the injector terminals. The resistance should be between 11 and 16 ohms. If the resistance is outside of this range, the injector may be faulty and will need to be replaced.

Step 3: Check the ECM

If the wiring and injector both check out, the issue may be with the ECM. Start by checking the ECM for any signs of damage or wear. Look for corrosion, loose connections, or any other issues that could be causing a short circuit.

If the ECM looks fine, you can use a scan tool to check for any error codes related to the injector circuit. If there are no other error codes, the issue may be with the ECM itself. In this case, you will need to have the ECM replaced or repaired by a professional.

Conclusion

Fixing the P1210 error code can be a bit of a challenge, but with the right tools and knowledge, it is definitely doable. By following the steps outlined above, you can diagnose and fix the issue with the injector circuit for cylinder #3. Remember to always be careful when working on your vehicle and to consult a professional if you’re not sure what you’re doing.

FAQs

1. Can I drive my car with the P1210 error code?

It’s not recommended to drive your car with the P1210 error code, as it can cause a variety of problems with your engine. It’s best to diagnose and fix the issue as soon as possible.

2. How much does it cost to fix the P1210 error code?

The cost of fixing the P1210 error code will depend on the cause of the issue. If it’s a simple wiring issue, it may only cost a few hundred dollars to fix. If the issue is with the injector or ECM, it could cost upwards of $1,000 to fix.

3. Can I fix the P1210 error code myself?

If you have some basic knowledge of car mechanics and the right tools, you can definitely fix the P1210 error code yourself. However, if you’re not confident in your abilities, it’s best to consult a professional.