AutoCodes – Generic – U1201

U1201 Code - Invalid Or Missing Data For Seat Motion / Control

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. 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: U1201 indicates Invalid Or Missing Data For Seat Motion / Control.
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 18,541

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 May 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1201 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 State of Health monitoring. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. When a module does not associate an identification number with at least one critical parameter within 5 seconds of beginning serial data communication, the Diagnostic Trouble Code (DTC) is set.

OBDII Code U1201 - Invalid Or Missing Data For Seat Motion / Control - AutoCodes.com — U1201 Code - Invalid Or Missing Data For Seat Motion / Control

What does this mean?

What are the Possible Causes of the DTC U1201?

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

How to Fix the DTC U1201?

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 U1201 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 U1201 code?

Need more information on how to fix the U1201 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 U1201 Code

1. What are the common symptoms of OBDII code U1201?

- Common symptoms include issues with seat movement or control functions, such as the seat not adjusting properly or not moving at all.

2. What could cause the OBDII code U1201 to appear?

- This code may appear due to wiring issues, faulty seat control module, damaged sensors, or a communication problem between modules.

3. How can I diagnose the cause of OBDII code U1201?

- Diagnosing this code usually involves checking the wiring harness for damage, testing the seat control module, inspecting sensors, and using a diagnostic tool to communicate with the affected modules.

4. Can I still drive my vehicle with the U1201 code present?

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

5. Is it possible to reset the U1201 code without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is essential to address the root cause to prevent the code from reoccurring.

6. Are there any DIY repair tips for resolving the U1201 code?

- DIY repair tips may include checking and repairing damaged wiring, ensuring proper sensor connections, and inspecting the seat control module for any visible issues.

7. How much does it typically cost to repair the U1201 code?

- The cost of repairing this code can vary depending on the underlying issue, but it may involve expenses related to parts replacement, labor, and diagnostic fees.

8. Can a malfunctioning seat control module cause the U1201 code?

- Yes, a malfunctioning seat control module can trigger the U1201 code if it is not sending or receiving data correctly for seat motion or control functions.

9. Will fixing the U1201 code require professional help?

- Depending on the complexity of the issue, fixing the U1201 code may require professional assistance, especially when dealing with advanced diagnostics or module replacements.

10. How soon should I address the U1201 code to prevent further complications?

- It is advisable to address the U1201 code as soon as possible to prevent potential inconvenience and ensure the proper functioning of the seat adjustment system in your vehicle.