AutoCodes – Acura – U0155 Acura

U0155 Acura Code - F-CAN Malfunction Gauge Control Module-Powertrain Control Module

Quick Answer

The Controller Area Network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (CANH and CANL). Common causes include Faulty Gauge Control Module, Gauge Control Module harness is open or shorted, Gauge Control Module circuit poor electrical connection. 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: U0155 Acura indicates F-CAN Malfunction Gauge Control Module-Powertrain Control Module.
Common causes: Common causes include Faulty Gauge Control Module, Gauge Control Module harness is open or shorted, Gauge Control Module circuit poor electrical connection.
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 7,824

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 01, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0155 Acura Description

The Controller Area Network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (CANH and CANL). When the Powertrain Control Module (PCM) does not receive the signals from the Gauge Control Module via the F-CAN lines for a set time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code U0155 Acura - F-CAN Malfunction Gauge Control Module-Powertrain Control Module - AutoCodes.com — U0155 Acura Code - F-CAN Malfunction Gauge Control Module-Powertrain Control Module

What does this mean?

What are the Possible Causes of the DTC U0155 Acura?

Faulty Gauge Control Module
Gauge Control Module harness is open or shorted
Gauge Control Module circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U0155 Acura?

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 U0155 Acura 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 U0155 Acura Code

1. What are common symptoms of the OBDII code U0155 in an Acura?

- Common symptoms include illuminated dashboard warning lights, loss of communication between control modules, and malfunctioning gauge cluster readings.

2. What does the U0155 code indicate in an Acura?

- The U0155 code indicates a malfunction in the communication system between the Gauge Control Module (GCM) and the Powertrain Control Module (PCM) via the F-CAN network.

3. What are possible causes of the U0155 code in an Acura?

- Possible causes include a faulty Gauge Control Module, Powertrain Control Module, damaged wiring or connectors, software issues, or a malfunction in the F-CAN network.

4. How can I diagnose the U0155 code in my Acura?

- Diagnosing the U0155 code typically involves using an OBDII scanner to retrieve the code, checking the communication between modules, inspecting wiring and connectors, and performing software updates if necessary.

5. Can I still drive my Acura with the U0155 code present?

- It is not recommended to drive your Acura with the U0155 code present, as it can lead to inaccurate instrument cluster readings and potential safety hazards due to communication issues between control modules.

6. How is the U0155 code typically repaired in an Acura?

- The U0155 code is typically repaired by addressing the root cause, which may involve replacing the faulty Gauge Control Module, Powertrain Control Module, repairing damaged wiring, or updating software to resolve communication issues.

7. Is the U0155 code a common issue in Acura vehicles?

- The U0155 code is not extremely common in Acura vehicles, but it can occur due to various factors such as electrical faults, module malfunctions, or network communication errors.

8. Can resetting the U0155 code fix the issue in an Acura?

- Resetting the U0155 code may temporarily clear the dashboard warning lights, but it will not fix the underlying issue causing the communication malfunction between the Gauge Control Module and Powertrain Control Module.

9. How much does it typically cost to repair the U0155 code in an Acura?

- The cost of repairing the U0155 code in an Acura can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars including parts and labor.

10. Are there any preventive measures to avoid the U0155 code in an Acura?

- To prevent the U0155 code, it's recommended to regularly inspect and maintain the electrical components, wiring, and control modules in your Acura to ensure proper communication and functionality.