How to Diagnose and Solve P1739 Gear Control Malfunction Issues

Introduction

Are you a car enthusiast who loves to get your hands dirty? Or perhaps you’re a regular car owner who’s just encountered the dreaded P1739 Gear Control Malfunction issue? Either way, you’re in the right place. This article will guide you through the process of diagnosing and solving this common car problem.

Understanding the P1739 Gear Control Malfunction

Before we dive into the solution, let’s first understand what the P1739 Gear Control Malfunction is. This error code is typically associated with automatic transmission vehicles and indicates a problem with the gear control system. It’s a signal that your car’s computer has detected an issue with the third clutch pressure switch circuit.

Common Symptoms

The symptoms of a P1739 Gear Control Malfunction can vary, but some common signs include:

– The check engine light is on
– The vehicle is not shifting properly
– The vehicle is stuck in a specific gear
– The vehicle’s fuel efficiency has decreased

Diagnosing the P1739 Gear Control Malfunction

Now that we know what we’re dealing with, let’s move on to diagnosing the issue.

Step 1: Check the Error Code

The first step in diagnosing a P1739 Gear Control Malfunction is to confirm the error code. You can do this by using an OBD-II scanner, a handy tool that reads the diagnostic trouble codes (DTCs) from your vehicle’s onboard computer.

Step 2: Inspect the Transmission Fluid

Next, check the transmission fluid. If it’s low or dirty, it could be causing the malfunction. The fluid should be at the correct level and have a clear, red color. If it’s brown or has a burnt smell, it’s time for a change.

Step 3: Check the Third Clutch Pressure Switch

The third clutch pressure switch is often the culprit behind a P1739 error code. Inspect it for any signs of damage or wear and tear.

Solving the P1739 Gear Control Malfunction

Once you’ve diagnosed the problem, it’s time to fix it. Here’s how:

Step 1: Replace the Transmission Fluid

If the transmission fluid was the issue, drain the old fluid and replace it with new, high-quality transmission fluid.

Step 2: Replace the Third Clutch Pressure Switch

If the third clutch pressure switch is damaged, it will need to be replaced. This is a job best left to professionals unless you’re confident in your mechanical skills.

Step 3: Clear the Error Code

After fixing the issue, use your OBD-II scanner to clear the error code. If the problem has been resolved, the code should not return.

Conclusion

Dealing with a P1739 Gear Control Malfunction can be a daunting task, but with the right knowledge and tools, you can diagnose and solve this issue yourself. Remember, if you’re ever in doubt, it’s always best to consult with a professional mechanic.

FAQs

1. What does a P1739 Gear Control Malfunction mean?
A P1739 Gear Control Malfunction means there’s an issue with the third clutch pressure switch circuit in your vehicle’s automatic transmission system.

2. Can I drive my car with a P1739 Gear Control Malfunction?
While it might be possible to drive with this error, it’s not recommended as it can lead to further damage. It’s best to address the issue as soon as possible.

3. How can I prevent a P1739 Gear Control Malfunction?
Regular maintenance, including checking and changing your transmission fluid as needed, can help prevent this issue.