AutoCodes – Generic – U180C

U180C Code - Battery Charger Control Module High Speed CAN Bus Off

Quick Answer

Modules connected to the Controller Area Network (CAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Battery Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger 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: U180C indicates Battery Charger Control Module High Speed CAN Bus Off.
Common causes: Common causes include Faulty Battery Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger 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 627

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 Jun 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U180C Description

Modules connected to the Controller Area Network (CAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. Each message contains the identification number of the transmitter module. A module with a CAN serial data circuits malfunction or which loses power during the current ignition cycle will have a Loss of Communication Diagnostic Trouble Code (DTC) set by other modules that depend on information from that failed module. If any of the CAN circuit are shorted to battery voltage, ground, or between them no communication is possible on the CAN serial data bus, a Diagnostic Trouble Code will set.

OBDII Code U180C - Battery Charger Control Module High Speed CAN Bus Off - AutoCodes.com — U180C Code - Battery Charger Control Module High Speed CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U180C?

Faulty Battery Charger Control Module
Battery Charger Control Module harness is open or shorted
Battery Charger Control Module circuit poor electrical connection

How to Fix the DTC U180C?

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 U180C 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.

Need more information about the U180C code?

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Need Help with the Code?

Get the U180C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U180C Buick — Battery Charger Control Module High Speed CAN Bus Off
U180C Cadillac — Battery Charger Control Module High Speed CAN Bus Off
U180C Chevrolet — Battery Charger Control Module High Speed CAN Bus Off
U180C GMC — Battery Charger Control Module High Speed CAN Bus Off

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 U180C Code

1. What are the common symptoms of OBDII code U180C (Battery Charger Control Module High Speed CAN Bus Off)?

- Common symptoms include the Check Engine light illuminating, issues with battery charging, and potential communication errors with the battery charging system.

2. What are the possible causes of OBDII code U180C?

- The code U180C can be caused by a faulty battery charger control module, wiring issues, a defective CAN bus communication system, or a software malfunction.

3. How can I diagnose OBDII code U180C?

- Diagnosing code U180C typically involves using a diagnostic scanner to retrieve the trouble codes, checking the battery charger control module and related wiring for any visible damage, and performing a CAN bus communication test.

4. What are some repair tips for fixing OBDII code U180C?

- Repair tips for resolving code U180C may include checking and repairing any damaged wiring, replacing the battery charger control module if necessary, updating software as needed, and ensuring proper communication within the CAN bus system.

5. Can I drive my vehicle with OBDII code U180C?

- It is generally not recommended to drive your vehicle with an unresolved U180C code, as it can lead to potential issues with the battery charging system and overall vehicle performance.

6. How serious is OBDII code U180C?

- While the severity of the code may vary depending on the underlying cause, it is important to address code U180C promptly to prevent any potential damage to the battery charging system or other related components.

7. Can a DIY enthusiast fix OBDII code U180C?

- DIY enthusiasts with experience in automotive repair and diagnostics may be able to address code U180C by following proper diagnostic procedures, but it is recommended to consult a professional if unsure.

8. How much does it cost to repair OBDII code U180C?

- The cost of repairing code U180C can vary depending on the specific cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It is advisable to obtain a few quotes from reputable mechanics.

9. Will resetting the trouble codes make OBDII code U180C disappear?

- Resetting the trouble codes may temporarily clear the Check Engine light associated with code U180C, but the underlying issue causing the code will still need to be diagnosed and repaired to prevent it from reoccurring.

10. Is OBDII code U180C specific to certain vehicle makes and models?

- Code U180C related to the Battery Charger Control Module High Speed CAN Bus Off is often found in newer vehicles equipped with advanced battery management systems, but it can vary across different makes and models.