AutoCodes – Generic – U1082

U1082 Code - Invalid Or Missing Data For Engine Systems

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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: U1082 indicates Invalid Or Missing Data For Engine Systems.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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 18,476

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 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1082 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) U1082 is set.

OBDII Code U1082 - Invalid Or Missing Data For Engine Systems - AutoCodes.com — U1082 Code - Invalid Or Missing Data For Engine Systems

What does this mean?

What are the Possible Causes of the DTC U1082?

Faulty Powertrain Control Module (PCM)
Powertrain Control Module (PCM) harness is open or shorted
Powertrain Control Module (PCM) circuit poor electrical connection

How to Fix the DTC U1082?

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 U1082 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 U1082 code?

Need more information on how to fix the U1082 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1082 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1082 Buick — Invalid Or Missing Data For Engine Systems
U1082 Cadillac — Invalid Or Missing Data For Engine Systems
U1082 Chevrolet — Invalid Or Missing Data For Engine Systems
U1082 GMC — Invalid Or Missing Data For Engine Systems

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 U1082 Code

1. What are common symptoms of OBDII code U1082?

- Common symptoms include poor engine performance, rough idling, stalling, and decreased fuel efficiency.

2. What are the possible causes of an U1082 code?

- The U1082 code can be triggered by issues such as faulty sensors, wiring problems, software glitches, or a malfunctioning engine control module.

3. How can I diagnose the U1082 code?

- Diagnosing the U1082 code typically involves using an OBDII scanner to retrieve the code, checking for other related codes, inspecting the engine systems for visible damage, and testing sensors and wiring for proper functionality.

4. Can a loose gas cap trigger the U1082 code?

- While a loose gas cap is more likely to trigger evaporative emission system codes, it is still recommended to ensure the gas cap is properly tightened to rule out any potential issues.

5. How can I repair the U1082 code?

- Repairing the U1082 code may involve addressing the specific underlying cause, such as replacing faulty sensors, repairing damaged wiring, updating software, or resetting the engine control module.

6. Is it safe to continue driving with an U1082 code?

- It is generally not recommended to ignore an U1082 code, as it can lead to further engine problems and potential safety hazards. It is advisable to address the issue promptly.

7. Can I reset the U1082 code with an OBDII scanner?

- Yes, an OBDII scanner can be used to reset the U1082 code after the underlying issue has been diagnosed and repaired. However, it is important to ensure the problem has been resolved to prevent the code from reoccurring.

8. Are there common mistakes to avoid when dealing with the U1082 code?

- Common mistakes to avoid include ignoring the code, replacing parts without proper diagnosis, and clearing the code without addressing the root cause of the issue.

9. How much does it typically cost to repair the U1082 code?

- The cost of repairing the U1082 code can vary depending on the specific cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed.

10. Can extreme weather conditions trigger the U1082 code?

- Extreme weather conditions, such as extreme cold or heat, can sometimes affect sensor performance and trigger the U1082 code. Ensuring proper insulation and protection for sensors can help prevent weather-related issues.