How to Diagnose and Solve B1627 PRNDL Reverse Input Circuit Failure Issues

Introduction

As a car owner, you may have experienced issues with your car’s transmission. One of the most common problems is the B1627 PRNDL Reverse Input Circuit Failure. This issue can cause your car to stall or not start at all. In this article, we will discuss how to diagnose and solve this problem.

What is B1627 PRNDL Reverse Input Circuit Failure?

B1627 PRNDL Reverse Input Circuit Failure is a transmission-related issue that occurs when the reverse input circuit fails. This circuit is responsible for sending signals to the transmission control module (TCM) to engage the reverse gear. When this circuit fails, the TCM cannot receive the signal, and the car cannot engage the reverse gear.

Diagnosing B1627 PRNDL Reverse Input Circuit Failure

To diagnose B1627 PRNDL Reverse Input Circuit Failure, you will need a diagnostic scanner. Follow these steps:

Step 1: Connect the Diagnostic Scanner

Connect the diagnostic scanner to the OBD-II port of your car. The OBD-II port is usually located under the dashboard on the driver’s side.

Step 2: Scan for Codes

Scan for codes using the diagnostic scanner. Look for the B1627 code. If the code is present, it means that there is a problem with the reverse input circuit.

Step 3: Check the Wiring

Check the wiring of the reverse input circuit. Look for any loose or damaged wires. If you find any, repair or replace them.

Step 4: Check the TCM

Check the TCM for any damage or corrosion. If you find any, replace the TCM.

Solving B1627 PRNDL Reverse Input Circuit Failure

To solve B1627 PRNDL Reverse Input Circuit Failure, follow these steps:

Step 1: Replace the TCM

If the TCM is damaged or corroded, replace it with a new one.

Step 2: Repair or Replace the Wiring

If the wiring is loose or damaged, repair or replace it.

Step 3: Clear the Codes

Clear the codes using the diagnostic scanner. This will reset the system and allow the car to engage the reverse gear.

Tips to Prevent B1627 PRNDL Reverse Input Circuit Failure

To prevent B1627 PRNDL Reverse Input Circuit Failure, follow these tips:

– Regularly check the wiring of the reverse input circuit for any damage or corrosion.
– Replace the TCM if it shows any signs of damage or corrosion.
– Use a high-quality diagnostic scanner to scan for codes and diagnose any issues.

Conclusion

B1627 PRNDL Reverse Input Circuit Failure is a common transmission-related issue that can cause your car to stall or not start at all. By following the steps outlined in this article, you can diagnose and solve this problem. Remember to regularly check the wiring and replace the TCM if necessary to prevent this issue from occurring.

FAQs

1. Can I drive my car with B1627 PRNDL Reverse Input Circuit Failure?

No, it is not safe to drive your car with B1627 PRNDL Reverse Input Circuit Failure. This issue can cause your car to stall or not start at all, which can be dangerous while driving.

2. How much does it cost to replace the TCM?

The cost of replacing the TCM can vary depending on the make and model of your car. On average, it can cost anywhere from $500 to $1000.

3. Can I repair the wiring myself?

If you have experience with car wiring, you can repair the wiring yourself. However, if you are not familiar with car wiring, it is best to take your car to a professional mechanic.