AutoCodes – Cadillac – U1827 Cadillac

U1827 Cadillac Code - Lost Communication With Steering Angle Sensor Module On Powertrain Expansion CAN Bus

Quick Answer

Devices connected to the powertrain high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Steering Angle Sensor Module, Steering Angle Sensor Module harness is open or shorted, Steering Angle Sensor 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: U1827 Cadillac indicates Lost Communication With Steering Angle Sensor Module On Powertrain Expansion CAN Bus.
Common causes: Common causes include Faulty Steering Angle Sensor Module, Steering Angle Sensor Module harness is open or shorted, Steering Angle Sensor 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 3,134

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1827 Cadillac Description

Devices connected to the powertrain high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U1827 Cadillac - Lost Communication With Steering Angle Sensor Module On Powertrain Expansion CAN Bus - AutoCodes.com — U1827 Cadillac Code - Lost Communication With Steering Angle Sensor Module On Powertrain Expansion CAN Bus

What does this mean?

What are the Possible Causes of the DTC U1827 Cadillac?

Faulty Steering Angle Sensor Module
Steering Angle Sensor Module harness is open or shorted
Steering Angle Sensor Module circuit poor electrical connection

How to Fix the DTC U1827 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 U1827 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.

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Need more information on how to fix the U1827 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 U1827 Cadillac Code

1. What are common symptoms of OBDII code U1827 in Cadillac vehicles?

- Common symptoms include loss of power steering assistance, traction control issues, and illuminated warning lights on the dashboard.

2. What can cause the OBDII code U1827 in a Cadillac?

- The code U1827 is typically caused by a malfunction in the communication system between the powertrain control module and the steering angle sensor module.

3. How serious is the OBDII code U1827 in a Cadillac?

- The code U1827 can affect the proper functioning of electronic stability control and other safety features, so it should be addressed promptly to ensure safe driving conditions.

4. Can a DIY enthusiast repair the OBDII code U1827 in a Cadillac?

- While some basic troubleshooting steps can be taken, resolving the U1827 code usually requires advanced diagnostic tools and expertise, so it's recommended to seek professional help.

5. How is the OBDII code U1827 diagnosed in a Cadillac?

- Diagnosis involves using an OBDII scanner to retrieve the code, followed by testing the communication between the powertrain control module and the steering angle sensor module.

6. Are there any temporary fixes for the OBDII code U1827 in a Cadillac?

- Temporary fixes like resetting the system or clearing the code may temporarily resolve the issue, but a permanent solution would involve identifying and addressing the root cause.

7. Can driving with the OBDII code U1827 in a Cadillac cause further damage?

- Continuing to drive with the U1827 code may lead to potential safety risks and further damage to the vehicle's electronic systems, so it's best to address the issue promptly.

8. How much does it cost to repair the OBDII code U1827 in a Cadillac?

- Repair costs for the U1827 code can vary depending on the underlying cause and the labor rates in your area, so it's recommended to get a diagnostic assessment from a professional technician.

9. Is it safe to ignore the OBDII code U1827 in a Cadillac?

- Ignoring the U1827 code can compromise the vehicle's safety systems and lead to potential steering and stability issues, so it's not advisable to ignore this warning.

10. Can extreme weather conditions trigger the OBDII code U1827 in a Cadillac?

- Extreme weather conditions can sometimes affect the electronic components involved in the communication system, potentially triggering the U1827 code.