AutoCodes – Generic – U1653

U1653 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 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 937

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

What does this mean?

What are the Possible Causes of the DTC U1653?

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

How to Fix the DTC U1653?

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 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

U1653 Buick — Chassis Systems High Speed Communication Enable Circuit
U1653 Cadillac — Chassis Systems High Speed Communication Enable Circuit
U1653 Chevrolet — Chassis Systems High Speed Communication Enable Circuit
U1653 GMC — Chassis Systems High Speed Communication Enable Circuit

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 Code

1. What are the common symptoms of OBDII code U1653?

- Common symptoms include issues with the vehicle's stability control, traction control, and anti-lock braking systems. The ABS warning light may illuminate on the dashboard.

2. What does the U1653 code indicate?

- The U1653 code indicates a malfunction in the chassis systems high-speed communication enable circuit.

3. What are the possible causes of OBDII code U1653?

- Possible causes include damaged wiring or connectors in the high-speed communication circuit, a faulty control module, or a communication network issue.

4. How can I diagnose the U1653 code?

- Diagnosing the U1653 code typically involves using a professional OBDII scanner to retrieve the specific fault codes and then inspecting the chassis systems' communication circuit for any visible damage.

5. Can I still drive my vehicle with the U1653 code present?

- It is not recommended to drive the vehicle with the U1653 code present, as it can affect the proper functioning of important safety systems like ABS and traction control.

6. How can I repair the U1653 code?

- Repairing the U1653 code may involve repairing or replacing damaged wiring or connectors in the high-speed communication circuit, resetting the control module, or addressing any network communication issues.

7. Is it necessary to reset the trouble codes after repairing the U1653 code?

- Yes, it is recommended to reset the trouble codes after repairing the U1653 code to clear the fault codes and ensure that the issue has been resolved.

8. Can extreme weather conditions trigger the U1653 code?

- Extreme weather conditions such as excessive heat or moisture can potentially cause issues with the chassis systems' communication circuit and trigger the U1653 code.

9. How long does it take to repair the U1653 code?

- The time required to repair the U1653 code can vary depending on the specific cause of the issue and the extent of the repairs needed. It is recommended to consult a professional mechanic for an accurate estimate.

10. Are there any preventive measures to avoid the U1653 code from reoccurring?

- Regularly inspecting and maintaining the chassis systems, ensuring proper wiring connections, and addressing any communication network issues promptly can help prevent the U1653 code from reoccurring.