AutoCodes – Chevrolet – U1170 Chevrolet

U1170 Chevrolet Code - Lost Communications With Driver Door Switch Assembly

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Driver Door Switch Assembly, Driver Door Switch Assembly harness is open or shorted, Driver Door Switch Assembly 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: U1170 Chevrolet indicates Lost Communications With Driver Door Switch Assembly.
Common causes: Common causes include Faulty Driver Door Switch Assembly, Driver Door Switch Assembly harness is open or shorted, Driver Door Switch Assembly 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 575

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 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1170 Chevrolet Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1170 is set.

OBDII Code U1170 Chevrolet - Lost Communications With Driver Door Switch Assembly - AutoCodes.com — U1170 Chevrolet Code - Lost Communications With Driver Door Switch Assembly

What does this mean?

What are the Possible Causes of the DTC U1170 Chevrolet?

Faulty Driver Door Switch Assembly
Driver Door Switch Assembly harness is open or shorted
Driver Door Switch Assembly circuit poor electrical connection

How to Fix the DTC U1170 Chevrolet?

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 U1170 Chevrolet 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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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 U1170 Chevrolet Code

1. What are the common symptoms of OBDII code U1170 in a Chevrolet related to lost communications with the driver door switch assembly?

- Common symptoms include non-functional power windows, door locks, and exterior mirror controls on the driver's side.

2. What are some possible causes of OBDII code U1170 in a Chevrolet indicating lost communications with the driver door switch assembly?

- Causes may include a faulty driver door switch assembly, damaged wiring harness, loose connections, or a malfunctioning control module.

3. How can I diagnose the issue causing OBDII code U1170 in my Chevrolet related to lost communications with the driver door switch assembly?

- Start by inspecting the wiring harness and connections. Check for any visible damage or loose connections. If everything looks fine, consider testing the driver door switch assembly and control module for proper functionality.

4. Is it safe to continue driving my Chevrolet with OBDII code U1170 related to lost communications with the driver door switch assembly?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid further inconvenience or potential safety hazards.

5. Can I reset OBDII code U1170 in my Chevrolet related to lost communications with the driver door switch assembly by disconnecting the battery?

- Disconnecting the battery may clear the code temporarily, but it is not a permanent solution. It is best to diagnose and repair the underlying issue causing the code to prevent it from reoccurring.

6. What are some repair tips for addressing OBDII code U1170 in a Chevrolet indicating lost communications with the driver door switch assembly?

- Start by checking and repairing any damaged wiring or connections. If the issue persists, consider replacing the driver door switch assembly or control module as necessary.

7. How much can I expect to pay to fix OBDII code U1170 in my Chevrolet related to lost communications with the driver door switch assembly?

- The cost of repairs can vary depending on the specific cause of the issue. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. Are there any recalls or technical service bulletins related to OBDII code U1170 in Chevrolet vehicles regarding lost communications with the driver door switch assembly?

- It's advisable to check with a Chevrolet dealership or online databases for any relevant recalls or technical service bulletins specific to your vehicle model and year.

9. Can extreme weather conditions affect OBDII code U1170 in a Chevrolet related to lost communications with the driver door switch assembly?

- Extreme heat or cold can potentially cause electrical components to malfunction, leading to communication errors like the one indicated by this code. Ensure all components are properly insulated and protected from the elements.

10. Will fixing OBDII code U1170 in my Chevrolet related to lost communications with the driver door switch assembly improve overall vehicle performance?

- While fixing this code may not directly impact performance, it will restore the functionality of essential driver-side controls like power windows and door locks, enhancing convenience and safety while driving.