AutoCodes – Chevrolet – U2166 Chevrolet

U2166 Chevrolet Code - Lost Communication With Driver Position Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Driver Position Module (DPM), Driver Position Module harness is open or shorted, Driver Position 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: U2166 Chevrolet indicates Lost Communication With Driver Position Module.
Common causes: Common causes include Faulty Driver Position Module (DPM), Driver Position Module harness is open or shorted, Driver Position 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 568

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2166 Chevrolet Description

Devices connected to the 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. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2166 Chevrolet - Lost Communication With Driver Position Module - AutoCodes.com — U2166 Chevrolet Code - Lost Communication With Driver Position Module

What does this mean?

What are the Possible Causes of the DTC U2166 Chevrolet?

Faulty Driver Position Module (DPM)
Driver Position Module harness is open or shorted
Driver Position Module circuit poor electrical connection

How to Fix the DTC U2166 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 U2166 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 U2166 Chevrolet Code

1. What are common symptoms of the U2166 OBDII code in a Chevrolet indicating lost communication with the Driver Position Module?

- Common symptoms include issues with power seat functionality, malfunctioning seat memory settings, and warning lights on the dashboard.

2. What are possible causes of the U2166 OBDII code in a Chevrolet?

- Possible causes include a faulty Driver Position Module, damaged wiring or connectors, software glitches, or a malfunctioning control module.

3. How can I diagnose the U2166 code in my Chevrolet related to lost communication with the Driver Position Module?

- To diagnose the issue, start by checking the wiring and connectors for any visible damage. You can also use a professional OBDII scanner to retrieve specific diagnostic trouble codes.

4. Is it safe to drive my Chevrolet with the U2166 code indicating lost communication with the Driver Position Module?

- It is advisable to address the issue promptly to avoid potential safety hazards, especially if it affects critical functions like power seat adjustments and seat memory settings.

5. Can I repair the U2166 code in my Chevrolet on my own, or do I need to take it to a mechanic?

- While some DIY enthusiasts may attempt basic troubleshooting like checking connections, it is recommended to consult a qualified mechanic for accurate diagnosis and repairs.

6. Will resetting the OBDII system clear the U2166 code from my Chevrolet?

- Resetting the system may temporarily clear the code, but if the underlying issue causing lost communication with the Driver Position Module persists, the code is likely to reappear.

7. How much does it typically cost to repair the U2166 code in a Chevrolet related to the Driver Position Module?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay for diagnostic services, parts replacement, and labor, which can range from a few hundred to a thousand dollars.

8. Are there any preventive measures I can take to avoid encountering the U2166 code in my Chevrolet?

- Regularly checking and maintaining the electrical components, connectors, and modules related to the Driver Position Module can help prevent issues leading to the U2166 code.

9. Can extreme weather conditions or environmental factors trigger the U2166 OBDII code in a Chevrolet?

- Yes, extreme temperatures, moisture, or physical damage to wiring caused by road debris or accidents can contribute to communication failures with the Driver Position Module.

10. How long does it typically take to repair the U2166 code in a Chevrolet at a professional auto repair shop?

- The repair time can vary based on the specific diagnosis and required fixes, but most cases involving the U2166 code can be resolved within a few hours to a day, depending on parts availability.