AutoCodes – Generic – U0132

U0132 Code - Lost Communication With Suspension Control Module 'A'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Suspension Control Module 'A', Suspension Control Module 'A' harness is open or shorted, Suspension Control Module 'A' 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: U0132 indicates Lost Communication With Suspension Control Module 'A'.
Common causes: Common causes include Faulty Suspension Control Module 'A', Suspension Control Module 'A' harness is open or shorted, Suspension Control Module 'A' 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 20,431

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 Mar 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0132 Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Suspension Control Module 'A' has not been received.

OBDII Code U0132 - Lost Communication With Suspension Control Module 'A' - AutoCodes.com — U0132 Code - Lost Communication With Suspension Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0132?

Faulty Suspension Control Module 'A'
Suspension Control Module 'A' harness is open or shorted
Suspension Control Module 'A' circuit poor electrical connection

How to Fix the DTC U0132?

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 U0132 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 U0132 code?

Need more information on how to fix the U0132 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0132 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U0132 Buick — Lost Communication With Suspension Control Module
U0132 Cadillac — Lost Communication With Suspension Control Module
U0132 Chevrolet — Lost Communication With Suspension Control Module
U0132 GMC — Lost Communication With Suspension 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 U0132 Code

1. What are common symptoms of OBDII code U0132?

- Common symptoms include illuminated dashboard warning lights related to the suspension system, issues with the suspension's performance, and difficulty adjusting the suspension settings.

2. What does the OBDII code U0132 indicate?

- The code U0132 indicates that there is a communication problem between the vehicle's main computer and the suspension control module 'A'.

3. What are some possible causes of code U0132?

- Possible causes include damaged wiring or connectors between the main computer and the suspension control module, a faulty suspension control module, or a problem with the main computer itself.

4. How can I diagnose the source of the communication issue for code U0132?

- A thorough inspection of the wiring and connectors between the main computer and the suspension control module, as well as checking for any loose connections or physical damages, can help diagnose the issue.

5. Can code U0132 be triggered by a failing battery or alternator?

- Yes, a failing battery or alternator can potentially cause voltage irregularities that may lead to communication issues between the main computer and the suspension control module, triggering code U0132.

6. Are there any repair tips for addressing code U0132?

- Repair tips include ensuring all wiring and connectors are in good condition, addressing any battery or alternator issues, and potentially replacing the suspension control module if necessary.

7. Can I continue driving my vehicle with OBDII code U0132?

- It is not recommended to drive the vehicle with this code present, as it can affect the performance and safety of the suspension system. It is advised to address the issue promptly.

8. Is it possible to reset OBDII code U0132 without fixing the underlying problem?

- While you can clear the code using an OBDII scanner, it is not recommended to do so without fixing the underlying communication issue, as it may lead to further complications and potential safety risks.

9. How much does it typically cost to repair OBDII code U0132?

- The cost of repair can vary depending on the exact cause of the communication issue, but it may involve costs for diagnosing the problem, replacing damaged components, or reprogramming the control modules.

10. Can a DIY enthusiast fix OBDII code U0132 at home?

- While some basic troubleshooting steps can be attempted at home, diagnosing and repairing the communication issue for code U0132 may require specialized tools and expertise, making it more suitable for professional mechanics.