AutoCodes – Honda – U0107 Honda

U0107 Honda Code - Lost Communication With Throttle Actuator Control Module

Quick Answer

The Throttle Actuator Control (TAC) module and the Powertrain Control Module (PCM) communicate via a dedicated serial data circuit. Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator Control Module circuit poor electrical connection (loose or broken wires). 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
U0107 Honda indicates Lost Communication With Throttle Actuator Control Module.
Common causes
Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator Control Module circuit poor electrical connection (loose or broken wires).
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.
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Code Popularity 33,705
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 01, 2020
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Code U0107 Honda Description

The Throttle Actuator Control (TAC) module and the Powertrain Control Module (PCM) communicate via a dedicated serial data circuit. This serial data circuit is separated from other serial data circuits on the vehicle. Accurate transmitting and receiving of serial data require not only good circuit integrity but also sufficient system voltage. This diagnostic test monitors de accuracy of the serial data transmitted between the TAC module and the PCM. The Diagnostic Trouble Code (DTC) U0107 is set when the Powertrain Control Module detects a loss of data or invalid data from the Throttle Actuator Control.
OBDII Code U0107 Honda - Lost Communication With Throttle Actuator Control Module - AutoCodes.com
U0107 Honda Code - Lost Communication With Throttle Actuator Control Module

What are the Possible Causes of the DTC U0107 Honda?

  • Faulty Throttle Actuator Control (TAC) Module
  • Throttle Actuator Control Module harness is open or shorted
  • Throttle Actuator Control Module circuit poor electrical connection (loose or broken wires)

How to Fix the DTC U0107 Honda?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0107 Honda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.

Frequently Asked Questions about U0107 Honda Code

1. What does the OBDII code U0107 in a Honda mean?

The U0107 code indicates a communication problem between the Engine Control Module (ECM) and the Throttle Actuator Control Module.

2. What are common symptoms of a U0107 code in a Honda?

Common symptoms include issues with acceleration, reduced engine power, stalling, and the Check Engine Light being illuminated.

3. What are possible causes of a U0107 code in a Honda?

Potential causes can include faulty wiring or connectors, a malfunctioning Throttle Actuator Control Module, a faulty ECM, or a communication bus issue.

4. How can I diagnose a U0107 code in my Honda?

Diagnosis typically involves checking the wiring and connectors for any damage or corrosion, testing the Throttle Actuator Control Module, and using a diagnostic scan tool to communicate with the modules.

5. Can I still drive my Honda with a U0107 code present?

It is not recommended to drive your vehicle with a U0107 code present, as it can lead to unsafe driving conditions and potential damage to the engine.

6. How can I repair a U0107 code in my Honda?

Repair methods may include repairing or replacing damaged wiring, cleaning or replacing connectors, replacing the Throttle Actuator Control Module, or reprogramming the ECM.

7. Can a U0107 code be triggered by a loose gas cap?

No, a U0107 code is related to a communication issue between specific modules in the vehicle and is not typically caused by a loose gas cap.

8. Is it possible to clear a U0107 code without fixing the underlying issue?

Clearing the code without addressing the underlying problem may temporarily turn off the Check Engine Light, but the issue causing the code will likely reappear.

9. How long does it take to repair a U0107 code in a Honda?

The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day to diagnose and fix the problem.

10. Can a U0107 code be prevented in the future?

Regular maintenance, such as checking and cleaning electrical connectors, can help prevent communication issues that may lead to a U0107 code in the future.

Discuss the causes and fixes for U0107 Honda OBDII Code

  • I can't find anywhere on the internet where to find the TAC module in my 05 TSX!? Plz help!

  • The TAC Module is under the right side of the dash. Behind the glove box. You have to remove the right kick panel to access the module.

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  • Did you fixed

  • Yes I did end up fixing my car... All by myself also, might I add. ?
    The problem was not the TAC module but the ECU. It was majorly corroded despite the fact that I'd literally just taken the car to the dealership for a recall on ECU corrosion. I ended up buying a used ECU and swapping out the immobilizer chip. Unfortunately I realized after doing the replacement that the 06 TSX uses a different type of 2nd coolant temp sensor so the computer thinks the values on my ECT2 sensor are incorrect... But other than that all the values were good based off the OBD data.
    I was able to drive without the car being in limp mode after doing the replacement, but the starter went out literally after only one trip. (AND yes it was def the starter bc I removed it and tried jumping straight from fully charged battery and still nothing.. Even without the load of being on the car ). SOOOO..I just parked the POS after that bc it also needs a rack and pinion and AC compressor clutch.

  • Thank you for sharing!

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