AutoCodes – Cadillac – U1653 Cadillac

U1653 Cadillac Code - Chassis Systems High Speed Communication Enable Circuit

Quick Answer

The Body Control Module (BCM) activates the ignition circuit when the vehicle power mode is in ACCESSORY mode or Ignition ON/Vehicle In Service mode. Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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: U1653 Cadillac indicates Chassis Systems High Speed Communication Enable Circuit.
Common causes: Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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 558

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 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1653 Cadillac Description

The Body Control Module (BCM) activates the ignition circuit when the vehicle power mode is in ACCESSORY mode or Ignition ON/Vehicle In Service mode. The ignition circuit wakes up the devices for serial data bus communication. The Diagnostic Trouble Code (DTC) will set when the device setting the DTC has attempted to establish communications on the chassis high-speed GMLAN serial data circuits more than 3 times.

OBDII Code U1653 Cadillac - Chassis Systems High Speed Communication Enable Circuit - AutoCodes.com — U1653 Cadillac Code - Chassis Systems High Speed Communication Enable Circuit

What does this mean?

What are the Possible Causes of the DTC U1653 Cadillac?

Faulty Module that is not communicating
Module harness is open or shorted
Module circuit poor electrical connection

How to Fix the DTC U1653 Cadillac?

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 U1653 Cadillac 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 U1653 Cadillac code?

Need more information on how to fix the U1653 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1653 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 U1653 Cadillac Code

1. What are the common symptoms of OBDII code U1653 in a Cadillac related to the Chassis Systems High Speed Communication Enable Circuit?

- Common symptoms include issues with the electronic stability control system, traction control system, or other chassis-related systems not functioning properly.

2. What can cause the OBDII code U1653 in a Cadillac?

- The code can be triggered by damaged wiring, loose connections, a faulty module, or issues with the high-speed communication network in the chassis systems.

3. How can I diagnose the Chassis Systems High Speed Communication Enable Circuit issue in my Cadillac?

- Using a diagnostic scanner to read the specific code, checking the wiring and connections related to the chassis systems, and performing a thorough inspection of the components can help diagnose the problem.

4. Is it safe to drive my Cadillac with the U1653 code related to the Chassis Systems High Speed Communication Enable Circuit?

- It is not recommended to drive the vehicle with this code active as it can affect the proper functioning of important safety systems like stability control and traction control.

5. Can I reset the U1653 code in my Cadillac to see if it comes back?

- Yes, you can try clearing the code with a diagnostic scanner, but if the underlying issue causing the code is not resolved, it is likely to reappear.

6. What are some repair tips for fixing the U1653 code in a Cadillac?

- Repair tips include checking and repairing any damaged wiring, ensuring all connections are secure, replacing faulty modules if necessary, and conducting a thorough inspection of the chassis systems.

7. How much does it typically cost to repair the U1653 code related to the Chassis Systems High Speed Communication Enable Circuit in a Cadillac?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve labor costs for diagnosis and repair, as well as potential expenses for replacement parts.

8. Could a weak battery or alternator cause the U1653 code to appear in a Cadillac?

- Yes, a weak battery or alternator can sometimes cause communication errors in the vehicle's systems, leading to codes like U1653 related to the Chassis Systems High Speed Communication Enable Circuit.

9. Can a DIY enthusiast fix the U1653 code in a Cadillac, or is it best left to professional mechanics?

- While some DIY enthusiasts may be able to diagnose and repair simple wiring or connection issues related to the U1653 code, more complex problems may require the expertise of professional mechanics.

10. How long does it usually take to repair the U1653 code in a Cadillac?

- The repair time can vary depending on the exact cause of the code and the complexity of the repair needed. It can range from a quick fix to a more involved process that may take several hours.