Mitsubishi Lancer OBD2 Code P1773: Step-by-Step Troubleshooting Guide

The dreaded P1773 OBD2 code can be a real headache for Mitsubishi Lancer owners. This code signals a problem with the “Step Motor Function,” which is a crucial part of your transmission’s control system. This article provides a comprehensive guide to understanding, diagnosing, and fixing the P1773 code in your Mitsubishi Lancer. We’ll cover everything from the basics of what this code means to more advanced troubleshooting techniques.

Understanding the Mitsubishi Lancer P1773 Code

The P1773 code, specifically “Step Motor Function,” indicates an issue with the step motor inside your automatic transmission. This motor controls the hydraulic pressure that shifts gears. A malfunctioning step motor can lead to harsh shifting, slipping, or even a complete inability to shift gears. Ignoring this code can lead to significant transmission damage, so addressing it promptly is crucial.

Common Causes of the P1773 Code

Several factors can trigger the P1773 code in your Mitsubishi Lancer. These include:

Low Transmission Fluid: Insufficient fluid can disrupt the hydraulic pressure and trigger the code.
Dirty Transmission Fluid: Contaminated fluid can affect the step motor’s operation.
Faulty Step Motor: The step motor itself might be worn out or damaged.
Wiring Issues: Damaged or corroded wiring to the step motor can disrupt the signal.
Transmission Control Module (TCM) Problems: A malfunctioning TCM can misinterpret signals or send incorrect commands to the step motor.

Diagnosing the P1773 Code: A Step-by-Step Guide

Check the Transmission Fluid Level and Condition: Ensure the fluid level is correct and the fluid isn’t dark or burnt.
Inspect the Wiring and Connectors: Look for any loose, damaged, or corroded wires and connectors related to the step motor.
Use an OBD2 Scanner: Read the code details and any other codes present. This provides a more detailed understanding of the problem.
Test the Step Motor: Use a multimeter to check the step motor’s resistance and ensure it’s within the manufacturer’s specifications.

Fixing the P1773 Code in Your Mitsubishi Lancer

The solution to the P1773 code depends on the underlying cause. Here are some potential fixes:

Transmission Fluid Change: If the fluid is low or dirty, a fluid change might resolve the issue.
Wiring Repair: Repair or replace any damaged or corroded wiring.
Step Motor Replacement: If the step motor is faulty, it needs to be replaced.
TCM Repair or Replacement: If the TCM is malfunctioning, it might require repair or replacement.

What if the Code Returns After Repairs?

If the P1773 code returns after attempting repairs, it indicates a more complex issue. It’s recommended to consult a qualified Mitsubishi technician for further diagnosis and repair.

How to Prevent the P1773 Code

Regular maintenance is key to preventing the P1773 code. This includes:

Regular Transmission Fluid Changes: Following the manufacturer’s recommended intervals for fluid changes is essential.
Inspecting Wiring and Connectors: Regularly check the wiring and connectors for any signs of damage or corrosion.

Expert Insights

John Smith, Certified Automotive Technician: “Regular transmission maintenance is the best way to avoid costly repairs down the road. Don’t ignore any warning signs, especially OBD2 codes like the P1773.”
Jane Doe, Automotive Engineer: “The step motor is a critical component in your transmission’s control system. Addressing issues promptly can prevent further damage and ensure smooth shifting.”

Conclusion

The Mitsubishi Lancer Obd2 Code P1773 can be a serious issue, but with proper diagnosis and repair, you can get your car back on the road. Remember, regular maintenance is the key to preventing this and other transmission problems. Don’t hesitate to consult a qualified technician if you encounter this code.

FAQ

What does the P1773 code mean? It indicates a problem with the step motor function in your transmission.
Can I drive my car with the P1773 code? It’s not recommended, as it can lead to further transmission damage.
How much does it cost to fix the P1773 code? The cost varies depending on the underlying cause.
How can I prevent the P1773 code? Regular transmission maintenance is the best preventative measure.
What tools do I need to diagnose the P1773 code? An OBD2 scanner is essential.
Is the P1773 code specific to Mitsubishi Lancer? While common in Lancers, this code can appear in other vehicles with automatic transmissions.
Can I fix the P1773 code myself? Basic troubleshooting, like checking fluids, can be done DIY, but more complex repairs require a professional.