How to Fix B1335 Door Ajar RR Circuit Failure

Introduction

If you’re experiencing the B1335 Door Ajar RR Circuit Failure error code, you’re not alone. This is a common issue that many car owners face, and it can be frustrating to deal with. However, with the right tools and knowledge, you can fix this problem yourself and save money on costly repairs. In this article, we’ll provide you with step-by-step instructions on how to fix the B1335 Door Ajar RR Circuit Failure error code.

What is B1335 Door Ajar RR Circuit Failure?

The B1335 Door Ajar RR Circuit Failure error code is a diagnostic trouble code (DTC) that indicates a problem with the rear right door ajar circuit. This code is typically triggered when the car’s computer detects a fault in the circuit, which can be caused by a variety of issues, including a faulty sensor, damaged wiring, or a malfunctioning control module.

Step-by-Step Guide to Fixing B1335 Door Ajar RR Circuit Failure

Step 1: Check the Rear Right Door Sensor

The first step in fixing the B1335 Door Ajar RR Circuit Failure error code is to check the rear right door sensor. This sensor is responsible for detecting whether the door is open or closed, and if it’s faulty, it can trigger the error code. To check the sensor, follow these steps:

Locate the rear right door sensor, which is typically located on the door frame.
Disconnect the sensor from the wiring harness.
Using a multimeter, test the sensor for continuity. If the sensor doesn’t have continuity, it’s faulty and needs to be replaced.

Step 2: Check the Wiring

If the sensor is not faulty, the next step is to check the wiring. Damaged or corroded wiring can cause the B1335 Door Ajar RR Circuit Failure error code. To check the wiring, follow these steps:

Inspect the wiring for any signs of damage or corrosion.
If you find any damaged wiring, repair or replace it as necessary.
If the wiring appears to be in good condition, use a multimeter to test the wiring for continuity. If there is no continuity, the wiring is faulty and needs to be repaired or replaced.

Step 3: Check the Control Module

If the sensor and wiring are both in good condition, the next step is to check the control module. The control module is responsible for receiving signals from the sensor and controlling the door ajar warning light. To check the control module, follow these steps:

Locate the control module, which is typically located under the dashboard or in the engine compartment.
Disconnect the control module from the wiring harness.
Using a multimeter, test the control module for continuity. If the control module doesn’t have continuity, it’s faulty and needs to be replaced.

Step 4: Replace the Faulty Component

Once you’ve identified the faulty component, whether it’s the sensor, wiring, or control module, you’ll need to replace it. You can purchase replacement parts from your local auto parts store or online. Follow the manufacturer’s instructions for installing the new component.

Conclusion

Fixing the B1335 Door Ajar RR Circuit Failure error code may seem daunting, but with the right tools and knowledge, it’s a task that you can easily tackle yourself. By following the step-by-step guide outlined in this article, you can identify and fix the problem, saving yourself time and money on costly repairs.

FAQs

1. Can I still drive my car with the B1335 Door Ajar RR Circuit Failure error code?

Yes, you can still drive your car with the B1335 Door Ajar RR Circuit Failure error code. However, it’s important to note that the door ajar warning light may remain on, and you won’t receive a warning if the rear right door is actually open. It’s best to fix the problem as soon as possible to avoid any safety issues.

2. How much does it cost to fix the B1335 Door Ajar RR Circuit Failure error code?

The cost of fixing the B1335 Door Ajar RR Circuit Failure error code will depend on the specific component that needs to be replaced. In general, replacing a sensor or wiring will cost less than replacing a control module. You can expect to pay anywhere from $50 to $500 for parts and labor.

3. Can I fix the B1335 Door Ajar RR Circuit Failure error code myself?

Yes, you can fix the B1335 Door Ajar RR Circuit Failure error code yourself if you have the right tools and knowledge. However, if you’re not comfortable working on your car or don’t have the necessary tools, it’s best to take your car to a professional mechanic.