AutoCodes – GMC – U185E GMC

U185E GMC Code - Fuel Injector Control Module Lost Communication With Body Control Module

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 Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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: U185E GMC indicates Fuel Injector Control Module Lost Communication With Body Control Module.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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 467

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U185E GMC 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 U185E GMC - Fuel Injector Control Module Lost Communication With Body Control Module - AutoCodes.com — U185E GMC Code - Fuel Injector Control Module Lost Communication With Body Control Module

What does this mean?

What are the Possible Causes of the DTC U185E GMC?

Faulty Body Control Module (BCM)
Body Control Module harness is open or shorted
Body Control Module circuit poor electrical connection

How to Fix the DTC U185E GMC?

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 U185E GMC 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 U185E GMC Code

1. What are the common symptoms of OBDII code U185E GMC?

- Common symptoms include engine misfires, rough idling, poor fuel efficiency, and potential stalling or starting issues.

2. What can cause the OBDII code U185E GMC to trigger?

- This code typically triggers when there is a communication breakdown between the fuel injector control module and the body control module.

3. How serious is the U185E GMC code?

- While the code itself may not directly affect the drivability of the vehicle, ignoring it can potentially lead to more serious issues with engine performance and fuel efficiency.

4. How can I diagnose the U185E GMC code?

- Diagnosing this code usually involves using a professional OBDII scanner to retrieve the specific trouble codes and checking for any wiring or connection issues between the modules.

5. What are some possible repair tips for resolving the U185E GMC code?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections between modules, and possibly replacing the fuel injector control module if needed.

6. Can I drive my vehicle with the U185E GMC code activated?

- It is generally not recommended to drive with this code activated, as it can lead to potential fuel system issues and affect overall engine performance.

7. How much does it typically cost to repair the U185E GMC code?

- Repair costs can vary depending on the exact cause of the communication issue, but it may range from a few hundred to over a thousand dollars for parts and labor.

8. Is the U185E GMC code a common issue in GMC vehicles?

- While this code may not be extremely common, it can still occur in certain GMC models due to electronic communication issues between modules.

9. Can resetting the trouble codes clear the U185E GMC code?

- Resetting the trouble codes may temporarily clear the code, but if the underlying communication issue is not addressed, the code is likely to return.

10. How can I prevent the U185E GMC code from reoccurring?

- Regular maintenance, checking for loose or damaged wiring, and addressing any communication issues promptly can help prevent the code from reoccurring in the future.