How to Fix B1320 Driver Door Ajar Circuit Open

Introduction

If you’re experiencing the B1320 error code on your car, it means that the driver door ajar circuit is open. This can be a frustrating issue 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 B1320 error code and get your car back on the road.

Step 1: Check the Door Switch

The first thing you should do when you encounter the B1320 error code is to check the door switch. This switch is located on the door frame and is responsible for detecting whether the door is open or closed. If the switch is faulty or damaged, it can cause the B1320 error code to appear.

To check the door switch, start by opening and closing the door several times to see if the error code disappears. If it doesn’t, you’ll need to remove the switch from the door frame and test it with a multimeter. If the switch is faulty, you’ll need to replace it with a new one.

Step 2: Check the Wiring

If the door switch is working properly, the next step is to check the wiring. The wiring for the door switch runs from the switch to the car’s computer, and if there’s a break or a short in the wiring, it can cause the B1320 error code to appear.

To check the wiring, start by inspecting the wires for any visible damage or wear. If you don’t see any issues, you’ll need to use a multimeter to test the continuity of the wires. If you find a break or a short in the wiring, you’ll need to repair or replace the affected wires.

Step 3: Check the Computer

If the door switch and wiring are both in good condition, the next step is to check the car’s computer. The computer is responsible for receiving the signal from the door switch and interpreting it, and if there’s an issue with the computer, it can cause the B1320 error code to appear.

To check the computer, you’ll need to use a diagnostic tool to read the error codes stored in the computer’s memory. If the B1320 error code is the only code that appears, it’s likely that the computer is the issue. In this case, you’ll need to take your car to a mechanic or dealership to have the computer replaced or repaired.

Conclusion

Dealing with the B1320 error code can be frustrating, but with the right knowledge and tools, it’s something that you can fix on your own. By following the steps outlined in this article, you’ll be able to diagnose and fix the issue with your car’s driver door ajar circuit and get back on the road in no time.

FAQs

1. Can I drive my car with the B1320 error code?

It’s not recommended to drive your car with the B1320 error code, as it can indicate a problem with the driver door ajar circuit. This can affect the safety of your vehicle and may cause further damage if left unchecked.

2. How much does it cost to fix the B1320 error code?

The cost of fixing the B1320 error code will depend on the cause of the issue. If it’s a simple fix like a faulty door switch, it may only cost a few dollars to replace the part. However, if the issue is with the car’s computer, it can cost several hundred dollars to have it repaired or replaced.

3. Can I fix the B1320 error code myself?

If you have some experience with car repairs and the right tools, you may be able to fix the B1320 error code yourself. However, if you’re not confident in your abilities or the issue is more complex, it’s best to take your car to a mechanic or dealership for repairs.