Engine-Codes.com
Engine-Codes – Honda – B2188 Honda

B2188 Honda Code - Communication Line Driver Side MPCS Unit Cannot Receive UART Messages From Front Passenger Side MPCS Unit

Quick Answer

The B2188 Honda diagnostic trouble code (DTC) indicates a communication issue on the communication line between the driver side Multi-Plex Control System (MPCS) unit and the front passenger side MPCS unit in the vehicle. Common causes include Faulty wiring or connectors in the communication line, Defective driver side MPCS unit, Front passenger side MPCS unit malfunction. 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
B2188 Honda indicates Communication Line Driver Side MPCS Unit Cannot Receive UART Messages From Front Passenger Side MPCS Unit.
Common causes
Common causes include Faulty wiring or connectors in the communication line, Defective driver side MPCS unit, Front passenger side MPCS unit malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B2188 Honda Description

The B2188 Honda diagnostic trouble code (DTC) indicates a communication issue on the communication line between the driver side Multi-Plex Control System (MPCS) unit and the front passenger side MPCS unit in the vehicle. The MPCS units are responsible for controlling various systems in the vehicle, such as the power windows, power door locks, and other convenience features. When the driver side MPCS unit cannot receive UART (Universal Asynchronous Receiver-Transmitter) messages from the front passenger side MPCS unit, it can lead to malfunctions in these systems.

OBDII Code B2188 Honda - Communication Line Driver Side MPCS Unit Cannot Receive UART Messages From Front Passenger Side MPCS Unit
B2188 Honda Code - Communication Line Driver Side MPCS Unit Cannot Receive UART Messages From Front Passenger Side MPCS Unit

Common Causes of B2188 Honda

  1. Faulty wiring or connectors in the communication line
  2. Defective driver side MPCS unit
  3. Front passenger side MPCS unit malfunction
  4. Software glitch in the MPCS units
  5. Electrical interference affecting communication signals

Symptoms of B2188 Honda

  1. Power windows not operating correctly
  2. Power door locks malfunctioning
  3. Inconsistent operation of convenience features
  4. Dashboard warning light related to communication system

How to Fix B2188 Honda

  1. Diagnose the specific cause of the communication error using a diagnostic scan tool.
  2. Inspect the wiring and connectors in the communication line for any damage or loose connections.
  3. Test the driver side and front passenger side MPCS units for proper functionality.
  4. Update the software in the MPCS units if necessary.
  5. Repair or replace any faulty components identified during the diagnostic process.

Cost to Fix B2188 Honda

The typical repair costs for addressing a communication line issue like B2188 Honda can vary depending on the specific cause of the problem and the extent of repairs needed. In general, the cost of parts and labor for this type of repair can range from $150 to $500. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's recommended to consult with a qualified mechanic or repair shop to get an accurate estimate based on your vehicle's specific needs.

Need more information about the B2188 Honda code?

Need more information on how to fix the B2188 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2188 Honda 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 B2188 Honda Code

1. What are common symptoms of OBDII code B2188 in a Honda?

Common symptoms include issues with the communication line between the driver side and front passenger side MPCS units, resulting in potential malfunctions in the vehicle's systems.

2. What could cause the OBDII code B2188 to trigger in a Honda?

The code B2188 may be triggered due to a faulty communication line between the driver side and front passenger side MPCS units, which prevents the driver side unit from receiving UART messages.

3. How can I diagnose the OBDII code B2188 in my Honda?

Diagnosing this code involves checking the communication line between the MPCS units for any faults or breaks, as well as inspecting the units themselves for any malfunctions.

4. Can a DIYer repair the OBDII code B2188 in a Honda?

Repairing this code may require advanced diagnostic tools and knowledge of automotive electrical systems. It is recommended to consult a professional mechanic for proper diagnosis and repair.

5. Is it safe to drive with the OBDII code B2188 illuminated in a Honda?

Driving with this code illuminated may affect the proper functioning of certain vehicle systems, so it is advisable to address the issue promptly to avoid any potential safety hazards.

6. How much does it typically cost to repair the OBDII code B2188 in a Honda?

The cost of repairing this code can vary depending on the extent of the issue and the labor rates of the repair shop. It's best to obtain a diagnostic assessment for an accurate estimate.

7. Can resetting the OBDII code B2188 in a Honda fix the issue?

Resetting the code may temporarily turn off the check engine light, but it will not address the underlying problem causing the communication line error between the MPCS units.

8. Are there any recalls or technical service bulletins related to OBDII code B2188 in Honda vehicles?

It is advisable to check with Honda or authorized service centers for any recalls or technical service bulletins related to the communication line issue between the MPCS units.

9. What other diagnostic trouble codes (DTCs) may be related to OBDII code B2188 in a Honda?

Other related DTCs may include codes pertaining to communication errors or malfunctions in the vehicle's control modules, such as B2189 or B2190.

10. How can I prevent the OBDII code B2188 from occurring in my Honda in the future?

Regular maintenance and inspections of the vehicle's electrical systems, including the MPCS units and communication lines, can help prevent issues that may trigger the B2188 trouble code.

Discuss the causes and fixes for B2188 Honda OBDII Code

Submit a New Comment

Code B2188 Honda comments

No comments found for this page.