AutoCodes – Infiniti – B2128 Infiniti

B2128 Infiniti Code - UART Communication

Quick Answer

Driver seat control unit performs Universal Asynchronous Receiver Transmitter (UART) communication with the automatic drive positioner control unit using 2 communication lines, TX and RX line. Common causes include Universal Asynchronous Receiver Transmitter (UART) Communication Line, Faulty Driver seat control unit, Driver seat control unit harness is open or shorted. 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
B2128 Infiniti indicates UART Communication.
Common causes
Common causes include Universal Asynchronous Receiver Transmitter (UART) Communication Line, Faulty Driver seat control unit, Driver seat control unit harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 9,501
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 19, 2019
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Code B2128 Infiniti Description

Driver seat control unit performs Universal Asynchronous Receiver Transmitter (UART) communication with the automatic drive positioner control unit using 2 communication lines, TX and RX line. Driver seat control unit receives the operation signals of tilt & telescopic switch, door mirror remote control switch, set switch and memory switch and the position signals of tilt & telescopic sensor and door mirror sensor from the automatic drive positioner control unit and transmits the operation request signal.
OBDII Code B2128 Infiniti - UART Communication - AutoCodes.com
B2128 Infiniti Code - UART Communication

What are the Possible Causes of the DTC B2128 Infiniti?

  • Universal Asynchronous Receiver Transmitter (UART) Communication Line
  • Faulty Driver seat control unit
  • Driver seat control unit harness is open or shorted
  • Driver seat control unit circuit poor electrical connection

How to Fix the DTC B2128 Infiniti?

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 B2128 Infiniti 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 B2128 Infiniti code?

Need more information on how to fix the B2128 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2128 Infiniti code diagnosed by a professional: Find a repair shop in your area

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 B2128 Infiniti Code

1. What are the common symptoms of OBDII code B2128 in an Infiniti related to UART communication issues?

- Common symptoms include intermittent or complete loss of communication with the vehicle's internal control modules, leading to various electrical malfunctions.

2. What are the possible causes of OBDII code B2128 indicating UART communication problems in an Infiniti?

- Possible causes may include damaged wiring, loose connections, a faulty UART communication circuit, or issues with the vehicle's internal control modules.

3. How can I diagnose OBDII code B2128 in my Infiniti related to UART communication problems?

- Diagnosis typically involves inspecting the wiring and connections for any visible damage, checking the communication circuits, and using a diagnostic scanner to pinpoint the exact cause.

4. Is it safe to continue driving my Infiniti with OBDII code B2128 related to UART communication issues?

- It is not recommended to continue driving your vehicle with this code, as it may lead to unexpected electrical failures and impact the overall performance of the vehicle.

5. Are there any simple repair tips for fixing OBDII code B2128 related to UART communication in an Infiniti?

- Simple repair tips may include checking and tightening all connections, repairing any damaged wiring, and resetting the code to see if the issue resolves.

6. Can a DIY enthusiast fix OBDII code B2128 indicating UART communication problems in an Infiniti?

- While some basic troubleshooting and repairs can be done by a knowledgeable DIY enthusiast, complex issues related to UART communication may require professional diagnosis and repair.

7. How much does it typically cost to repair OBDII code B2128 related to UART communication in an Infiniti?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a simple fix involving tightening connections to a more complex repair requiring replacement of components.

8. How long does it take to repair OBDII code B2128 in an Infiniti due to UART communication problems?

- The repair time can vary based on the extent of the issue, but simple fixes may take a short amount of time, while more complex repairs could require additional diagnostics and labor.

9. Can OBDII code B2128 in an Infiniti be a recurring issue even after repair?

- If the root cause of the UART communication problem is not properly addressed during the repair, there is a possibility that OBDII code B2128 may recur in the future.

10. Are there any preventive measures to avoid encountering OBDII code B2128 related to UART communication in an Infiniti?

- Regular maintenance checks, ensuring proper electrical connections, and addressing any electrical issues promptly can help prevent OBDII code B2128 and related UART communication problems in an Infiniti.

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