AutoCodes – Nissan – B2128 Nissan

B2128 Nissan 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 Nissan 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.

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Code Popularity 7,207

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 Sep 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2128 Nissan 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 Nissan - UART Communication - AutoCodes.com — B2128 Nissan Code - UART Communication

What does this mean?

What are the Possible Causes of the DTC B2128 Nissan?

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 Nissan?

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

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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 B2128 Nissan Code

1. What are the common symptoms of OBDII code B2128 (Nissan) related to UART communication issues?

The common symptoms include malfunctioning dashboard gauges, intermittent power steering operation, and difficulty starting the vehicle.

2. What are the potential causes of OBDII code B2128 (Nissan) indicating UART communication problems?

Possible causes include a faulty instrument cluster, damaged wiring harness, loose connections, or a malfunctioning power steering control module.

3. How can I diagnose and repair OBDII code B2128 (Nissan) myself?

You can start by checking the instrument cluster and power steering control module connections for any visible damage or loose wires. If no issues are found, it may require further diagnosis with a professional diagnostic tool.

4. Can a low battery voltage trigger OBDII code B2128 (Nissan) related to UART communication?

Yes, a low battery voltage can disrupt the communication between the instrument cluster and power steering control module, triggering the B2128 code.

5. Is it safe to continue driving my vehicle with OBDII code B2128 (Nissan)?

It is not recommended to drive the vehicle with unresolved B2128 code issues, as it may lead to further electrical malfunctions and potentially compromise vehicle safety.

6. How much does it typically cost to repair OBDII code B2128 (Nissan) caused by UART communication problems?

The cost of repairing B2128 code issues can vary depending on the underlying cause, ranging from a simple wiring repair to replacing the instrument cluster or power steering control module. It is advisable to consult a professional for accurate cost estimates.

7. Can extreme weather conditions affect the occurrence of OBDII code B2128 (Nissan) related to UART communication?

Yes, extreme temperatures can exacerbate electrical issues, leading to intermittent communication problems between the instrument cluster and power steering control module.

8. Will disconnecting the battery reset OBDII code B2128 (Nissan)?

Disconnecting the battery may temporarily clear the code, but if the underlying issue causing the UART communication problem is not addressed, the code is likely to reappear.

9. How long does it take to repair OBDII code B2128 (Nissan)?

The repair time for B2128 code issues can vary depending on the complexity of the problem and the availability of replacement parts. It may range from a few hours to a full day in some cases.

10. Can regular vehicle maintenance help prevent OBDII code B2128 (Nissan) related to UART communication problems?

Yes, performing regular vehicle maintenance, including checking the electrical connections and wiring harnesses, can help prevent potential issues that may trigger the B2128 code.