AutoCodes – Generic – U1132

U1132 Code - Generator Communication

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Engine Control Module (ECM) is not receiving a Local Interconnect Network (LIN) bus message from the Generator. Common causes include Faulty Generator, Generator harness is open or shorted, Generator 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: U1132 indicates Generator Communication.
Common causes: Common causes include Faulty Generator, Generator harness is open or shorted, Generator 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 8,051

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1132 Description

The Diagnostic Trouble Code (DTC) sets when the Engine Control Module (ECM) is not receiving a Local Interconnect Network (LIN) bus message from the Generator.

OBDII Code U1132 - Generator Communication - AutoCodes.com — U1132 Code - Generator Communication

What does this mean?

What are the Possible Causes of the DTC U1132?

Faulty Generator
Generator harness is open or shorted
Generator circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC U1132?

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 U1132 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 U1132 code?

Need more information on how to fix the U1132 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1132 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1132 Chrysler — Generator Communication
U1132 Dodge — Generator Communication
U1132 Jeep — Generator Communication
U1132 RAM — Generator Communication

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 U1132 Code

1. What are common symptoms of OBDII code U1132 (Generator Communication)?

- Common symptoms include issues with the battery not charging properly, dimming lights, and warning lights illuminating on the dashboard.

2. What can cause OBDII code U1132 to trigger?

- The code U1132 may be triggered by a faulty generator (alternator), damaged wiring or connectors related to the generator, or a malfunction in the generator control module.

3. How can I diagnose the cause of OBDII code U1132?

- To diagnose the cause of U1132, it is recommended to perform a thorough inspection of the generator, check the wiring and connectors for any damage or loose connections, and use a diagnostic scanner to retrieve additional information.

4. Can a bad battery cause OBDII code U1132 to appear?

- While a weak or failing battery can contribute to charging system issues, the primary cause of U1132 is usually related to the generator or its communication with the vehicle's control module.

5. What are some repair tips for resolving OBDII code U1132?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections to the generator, testing the generator's output, and potentially replacing the generator control module if necessary.

6. Is it safe to continue driving with OBDII code U1132 present?

- It is not recommended to continue driving with code U1132 present, as it can lead to further electrical system issues and potential breakdowns if the battery is not charging properly.

7. Can OBDII code U1132 be cleared/reset without fixing the underlying issue?

- While the code can be cleared/reset using a diagnostic scanner, it is important to address the root cause of U1132 to prevent the issue from recurring and ensure the proper functioning of the charging system.

8. How much does it typically cost to repair OBDII code U1132?

- The cost of repairing U1132 can vary depending on the cause of the issue, the extent of repairs needed, and labor rates. It is advisable to consult with a professional mechanic for an accurate diagnosis and cost estimate.

9. Are there any preventive maintenance tips to avoid OBDII code U1132 in the future?

- Regular maintenance of the charging system, including checking the generator, battery, and related components, can help prevent issues that may trigger code U1132. Additionally, addressing any warning signs promptly can help avoid more significant problems.

10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code U1132?

- While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing U1132 may require specialized tools and expertise. It is recommended to consult with a professional mechanic for accurate diagnosis and repairs.