P1773 Code: Complete DIY Repair Guide

The P1773 trouble code is a manufacturer-specific diagnostic code primarily associated with Mitsubishi vehicles. It generally indicates an issue with the Anti-lock Braking System (ABS) or Automatic Stability Control (ASC) system. This code is often triggered when there’s a communication problem between the ABS control module and other vehicle systems, particularly the transmission control module.

Symptoms of P1773 Code

When a vehicle triggers the P1773 code, several symptoms may manifest:

1. Illuminated ABS warning light
2. Illuminated Check Engine Light (CEL)
3. Traction control system malfunction
4. Erratic transmission behavior
5. Reduced vehicle stability during cornering or braking

These symptoms can vary depending on the specific vehicle model and the severity of the underlying issue. It’s crucial to address the problem promptly to ensure safe vehicle operation.

Technical Explanation

The P1773 code is typically set when the Engine Control Unit (ECU) or Transmission Control Module (TCM) detects an abnormality in the ABS system’s operation or communication. This code is often associated with the ABS control solenoid valve circuit, particularly in Mitsubishi vehicles.

In many cases, the P1773 code acts as a pointer to an ABS fault, prompting the vehicle’s onboard diagnostic system to illuminate the Check Engine Light in addition to the ABS warning light. This dual indication helps ensure that the driver is aware of a potential safety-critical issue.

The code may also be triggered by problems with the wheel speed sensors, which are crucial components of the ABS system. These sensors provide vital information about wheel rotation speeds, allowing the ABS to function correctly during braking events.

Step-by-Step Diagnosis

To diagnose the P1773 code effectively, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Retrieve all stored trouble codes and freeze frame data.
3. Clear the codes and test drive the vehicle to see if the P1773 code returns.
4. If the code reappears, inspect the ABS system components, starting with the wheel speed sensors.
5. Check all relevant wiring and connectors for damage, corrosion, or loose connections.
6. Examine the ABS control module for signs of damage or malfunction.
7. Use a multimeter to test the resistance of the ABS solenoids and sensors according to manufacturer specifications.
8. Verify the proper operation of the vehicle’s speed sensors and transmission range switch.
9. If all components check out, consider potential software issues in the ECU or TCM.

Solution Methods

Addressing the P1773 code typically involves the following solutions:

1. Replace faulty wheel speed sensors
2. Repair or replace damaged wiring and connectors
3. Clean corroded electrical connections
4. Replace the ABS control module if found defective
5. Update ECU or TCM software if a known issue exists
6. In some cases, replacing the transmission control solenoid may be necessary

It’s important to note that the specific repair method may vary depending on the vehicle make and model. Always consult the manufacturer’s service manual for precise procedures.

Cost Estimates

The cost to repair issues related to the P1773 code can vary widely:

• Wheel speed sensor replacement: $100 – $300 per sensor
• Wiring repair: $50 – $200
• ABS control module replacement: $500 – $1000
• ECU/TCM software update: $100 – $200
• Transmission control solenoid replacement: $200 – $500

These estimates can fluctuate based on the vehicle’s make, model, and your geographical location. Labor costs are not included and can significantly impact the total repair cost.

Warnings and Recommendations

Warning: Driving with an active P1773 code can be dangerous, as it may indicate compromised ABS functionality. This could lead to reduced braking performance and stability control issues.

Recommendations:

• Always use high-quality replacement parts to ensure proper system function.
• If you’re not comfortable with electrical diagnostics, seek professional help.
• After repairs, clear the codes and perform a thorough test drive to ensure the issue is resolved.
• Regular maintenance of your vehicle’s braking system can help prevent ABS-related issues.

Closing Thoughts

The P1773 code, while specific to certain manufacturers, highlights the importance of maintaining your vehicle’s critical safety systems. Proper diagnosis and repair of this code are essential for ensuring the continued safe operation of your vehicle. While some aspects of the diagnosis can be performed by DIY enthusiasts, complex issues involving the ABS system often require professional attention. Always prioritize safety and don’t hesitate to seek expert help when dealing with brake-related problems.

Frequently Asked Questions About P1773

• Can I drive my car with the P1773 code?
  While the vehicle may still operate, it’s not recommended to drive with this code active. The ABS system may be compromised, affecting your vehicle’s safety.
• Will the P1773 code clear itself?
  In most cases, the code will not clear itself. It typically requires fixing the underlying issue and then clearing the code with an OBD-II scanner.
• How often should I check my ABS system?
  It’s good practice to have your ABS system checked during regular maintenance, typically every 12,000 miles or annually. Always investigate any ABS warning lights promptly.
• Can a bad battery cause the P1773 code?
  While unlikely, a weak battery can cause various electrical issues that might trigger this code. However, it’s more commonly related to specific ABS components.
• Is the P1773 code serious?
  Yes, this code is considered serious as it relates to your vehicle’s braking system. It should be addressed as soon as possible to ensure safe vehicle operation.
• Can weather conditions trigger the P1773 code?
  Extreme weather conditions, particularly very cold temperatures, can sometimes cause temporary ABS sensor issues. However, persistent codes are usually due to component failures.
• How long does it take to fix a P1773 code?
  Repair time can vary from 1-3 hours for simple sensor replacements to several hours for more complex issues involving the ABS module or wiring.
• Will a P1773 code fail an emissions test?
  While primarily related to the ABS system, some regions may fail a vehicle on an emissions test for any active check engine light, including those triggered by P1773.