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Engine-Codes – Generic – P0880

P0880 Code - Transmission Control Module Supply Voltage Circuit

Quick Answer

The diagnostic trouble code P0880 indicates a problem with the transmission control module (TCM) supply voltage circuit. Common causes include Faulty TCM power relay, Damaged wiring or connectors in the supply voltage circuit, Blown fuse related to the TCM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0880 indicates Transmission Control Module Supply Voltage Circuit.
Common causes
Common causes include Faulty TCM power relay, Damaged wiring or connectors in the supply voltage circuit, Blown fuse related to the TCM.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P0880 Description

The diagnostic trouble code P0880 indicates a problem with the transmission control module (TCM) supply voltage circuit. The TCM is responsible for controlling the transmission's shifting behavior, ensuring optimal performance and efficiency. The supply voltage circuit provides power to the TCM to enable its operation. When this circuit malfunctions, it can lead to various transmission issues, affecting the vehicle's drivability and overall performance.

OBDII Code P0880 - Transmission Control Module Supply Voltage Circuit
P0880 Code - Transmission Control Module Supply Voltage Circuit

Common Causes of P0880

  1. Faulty TCM power relay
  2. Damaged wiring or connectors in the supply voltage circuit
  3. Blown fuse related to the TCM
  4. Malfunctioning TCM

Symptoms of P0880

  1. Check Engine Light illuminated on the dashboard
  2. Erratic shifting patterns
  3. Transmission slippage
  4. Harsh shifting
  5. Transmission failure

How to Fix P0880

  1. Begin by diagnosing the root cause of the issue using a diagnostic scanner to retrieve the specific fault codes.
  2. Inspect the TCM power relay, wiring, and connectors for any signs of damage or corrosion. Replace any faulty components.
  3. Check and replace any blown fuses related to the TCM supply voltage circuit.
  4. If the TCM itself is found to be faulty, it may need to be replaced or reprogrammed by a professional technician.
  5. Clear the fault codes and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0880

The cost of repairing the transmission control module supply voltage circuit can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the parts and labor for this repair could range from $200 to $500. However, it's essential to note that the actual cost can be higher or lower based on factors such as location, vehicle make and model, and the technician's hourly labor rates. It's advisable to consult with a trusted auto repair shop for a more accurate estimate tailored to your specific situation.

What does this mean?

Tech Notes for P0880





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Code P0880 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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