AutoCodes – Generic – U185E

U185E 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 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 896

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 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 - Fuel Injector Control Module Lost Communication With Body Control Module - AutoCodes.com — U185E Code - Fuel Injector Control Module Lost Communication With Body Control Module

What does this mean?

What are the Possible Causes of the DTC U185E?

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?

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 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 U185E code?

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Need Help with the Code?

Get the U185E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U185E Buick — Fuel Injector Control Module Lost Communication With Body Control Module
U185E Cadillac — Fuel Injector Control Module Lost Communication With Body Control Module
U185E Chevrolet — Fuel Injector Control Module Lost Communication With Body Control Module
U185E GMC — Fuel Injector Control Module Lost Communication With Body Control Module

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 Code

1. What are the common symptoms of OBDII code U185E (Fuel Injector Control Module Lost Communication With Body Control Module)?

- Common symptoms include stalling, rough idling, poor fuel efficiency, and issues with starting the vehicle.

2. What are the possible causes of OBDII code U185E?

- The code U185E can be caused by a faulty fuel injector control module, a malfunctioning body control module, damaged wiring or connectors between the two modules, or a communication error within the vehicle's network.

3. How can I diagnose OBDII code U185E?

- Diagnosing code U185E usually involves using a professional OBDII scanner to retrieve the code and checking for any additional related codes. It is also important to inspect the fuel injector control module, body control module, and related wiring for any visible issues.

4. Can I drive my vehicle with OBDII code U185E?

- It is not recommended to drive your vehicle with code U185E as it can lead to further damage and potentially unsafe driving conditions. It's best to address the issue promptly.

5. How can I repair OBDII code U185E?

- Repairing code U185E typically involves addressing the root cause of the communication error between the fuel injector control module and body control module. This may include repairing or replacing faulty modules, repairing damaged wiring, or addressing any network communication issues.

6. Is it possible to reset OBDII code U185E without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is not recommended to reset the code without addressing the underlying issue. The problem will likely reoccur, and it's crucial to fix the root cause to prevent further issues.

7. Can a DIY enthusiast fix OBDII code U185E at home?

- Depending on your skill level and access to tools, you may be able to address code U185E at home. However, due to the complexity of the system and potential need for specialized equipment, it's advisable to consult a professional mechanic for accurate diagnosis and repair.

8. How much does it cost to repair OBDII code U185E at a repair shop?

- The cost of repairing code U185E can vary depending on the specific cause of the issue, labor rates in your area, and whether any parts need to be replaced. It's recommended to obtain quotes from a few reputable repair shops to compare prices.

9. Is OBDII code U185E a common issue in certain vehicle makes and models?

- While code U185E can occur in various vehicle makes and models, it may be more common in specific brands known for electrical or communication system issues. It's a good idea to research common problems with your specific vehicle to see if others have experienced similar issues.

10. How can I prevent OBDII code U185E from occurring in the future?

- To prevent code U185E from occurring, it's essential to perform regular maintenance on your vehicle, including checking and cleaning electrical connections, inspecting wiring for damage, and addressing any warning signs promptly to avoid more significant issues.