How to Fix B1351 Ignition Key-In Circuit Short to Battery

Introduction

If you’re experiencing the B1351 error code on your car, it means that there’s a short circuit in the ignition key-in circuit that’s causing the battery to drain. This can be a frustrating problem to deal with, but fortunately, it’s something that you can fix on your own with a little bit of know-how. In this article, we’ll walk you through the steps you need to take to fix the B1351 error code and get your car back up and running.

Step 1: Check the Wiring

The first thing you need to do when you’re dealing with the B1351 error code is to check the wiring. Start by inspecting the wiring around the ignition switch and the key-in sensor. Look for any signs of damage, such as frayed wires or loose connections. If you find any damage, you’ll need to repair or replace the affected wiring.

Step 2: Check the Key-In Sensor

If the wiring looks good, the next thing you need to do is check the key-in sensor. This sensor is responsible for detecting when the key is inserted into the ignition and sending a signal to the car’s computer. If the sensor is faulty, it can cause the B1351 error code to appear.

To check the key-in sensor, start by removing the sensor from the ignition switch. Use a multimeter to test the sensor’s resistance. If the resistance is outside of the manufacturer’s specifications, you’ll need to replace the sensor.

Step 3: Check the Ignition Switch

If the wiring and key-in sensor both look good, the next thing you need to check is the ignition switch. The ignition switch is responsible for sending power to the car’s electrical system when the key is turned. If the switch is faulty, it can cause the B1351 error code to appear.

To check the ignition switch, start by removing it from the car. Use a multimeter to test the switch’s continuity. If the switch fails the continuity test, you’ll need to replace it.

Step 4: Reset the Error Code

Once you’ve identified and fixed the problem that was causing the B1351 error code, the final step is to reset the code. To do this, you’ll need an OBD-II scanner. Connect the scanner to your car’s OBD-II port and follow the instructions to reset the error code.

Conclusion

Dealing with the B1351 error code can be frustrating, but with a little bit of know-how, it’s something that you can fix on your own. By following the steps outlined in this article, you’ll be able to identify and fix the problem that’s causing the error code to appear, and get your car back up and running in no time.

FAQs

1. Can I drive my car with the B1351 error code?

It’s not recommended to drive your car with the B1351 error code. This error code indicates that there’s a short circuit in the ignition key-in circuit that’s causing the battery to drain. Driving your car with this problem can cause further damage to your car’s electrical system.

2. How much does it cost to fix the B1351 error code?

The cost to fix the B1351 error code will depend on the cause of the problem. If the problem is with the wiring, it may be a relatively inexpensive fix. If the problem is with the key-in sensor or ignition switch, it may be more expensive to fix.

3. Can I fix the B1351 error code myself?

Yes, you can fix the B1351 error code yourself if you have some basic knowledge of car mechanics and the right tools. However, if you’re not comfortable working on your car’s electrical system, it’s best to take it to a professional mechanic.