How to Diagnose and Solve B1823 Wiper Rear Park Sense Input Circuit Open Issues

Introduction

If you’re experiencing issues with your wiper rear park sense input circuit, you may have encountered the B1823 error code. This can be a frustrating problem to deal with, but with the right approach, it can be diagnosed and solved. In this article, we’ll provide you with step-by-step instructions on how to diagnose and solve B1823 wiper rear park sense input circuit open issues.

What is the B1823 Error Code?

The B1823 error code is a diagnostic trouble code (DTC) that indicates an issue with the wiper rear park sense input circuit. This circuit is responsible for detecting the position of the wiper blades when they are in the parked position. When this circuit is open, it means that there is a break in the electrical connection, which can prevent the wiper blades from functioning properly.

Diagnosing the B1823 Error Code

To diagnose the B1823 error code, you’ll need a few tools, including a multimeter and a wiring diagram for your vehicle. Here are the steps to follow:

Step 1: Check the Fuse

The first thing you should do is check the fuse for the wiper rear park sense input circuit. If the fuse is blown, it can cause the circuit to open, which will trigger the B1823 error code. Use your vehicle’s owner’s manual to locate the fuse box and check the wiper rear park sense input circuit fuse. If it’s blown, replace it and see if the error code disappears.

Step 2: Check the Wiring

If the fuse is not the issue, the next step is to check the wiring for the wiper rear park sense input circuit. Use your wiring diagram to locate the wires for this circuit and check for any breaks or damage. You can use a multimeter to test the continuity of the wires. If you find any breaks or damage, repair or replace the wiring as necessary.

Step 3: Check the Wiper Motor

If the wiring is not the issue, the problem may be with the wiper motor itself. Use your multimeter to test the resistance of the wiper motor. If the resistance is outside of the manufacturer’s specifications, it may be time to replace the wiper motor.

Solving the B1823 Error Code

Once you’ve diagnosed the issue, it’s time to solve the B1823 error code. Here are the steps to follow:

Step 1: Replace the Fuse

If the fuse was the issue, simply replace it and test the wiper blades to ensure they are functioning properly.

Step 2: Repair or Replace the Wiring

If the wiring was the issue, repair or replace the damaged wires and test the wiper blades to ensure they are functioning properly.

Step 3: Replace the Wiper Motor

If the wiper motor was the issue, replace it with a new one and test the wiper blades to ensure they are functioning properly.

Conclusion

Dealing with the B1823 error code can be frustrating, but with the right approach, it can be diagnosed and solved. By following the steps outlined in this article, you can get your wiper blades functioning properly again.

FAQs

1. Can I drive my car with the B1823 error code?

It’s not recommended to drive your car with the B1823 error code, as it can prevent your wiper blades from functioning properly, which can be dangerous in inclement weather.

2. How much does it cost to replace a wiper motor?

The cost to replace a wiper motor can vary depending on the make and model of your vehicle, as well as where you take it for repairs. On average, you can expect to pay between $150 and $350 for a new wiper motor.

3. Can I fix the wiring for the wiper rear park sense input circuit myself?

If you have experience with automotive wiring, you may be able to repair the wiring for the wiper rear park sense input circuit yourself. However, if you’re not comfortable with this type of repair, it’s best to take your vehicle to a professional mechanic.