AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Generic - B1A8A

B1A8A Code - Multi-Module VIN Handshake Failure

- Code Popularity: 2,025 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC B1A8A?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Radio Frequency Hub (RF Hub)
  • Faulty Powertrain Control Module (PCM)
  • Faulty Body Control Module (BCM)
  • RF HUB, BCM OR PCM Not Programmed
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC B1A8A?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for B1A8A Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1A8A code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B1A8A Description

The Radio Frequency Hub (RF Hub) receives and monitors the VIN messages from the Powertrain Control Module (PCM) and the Body Control Module (BCM). If the VIN is different from the last Vehicle Identification Number (VIN) it received, it will set this code. If the module was used on a previous vehicle, the VIN will be set to that vehicle.

OBDII Code B1A8A - Multi-Module VIN Handshake Failure - AutoCodes.com
B1A8A Code - Multi-Module VIN Handshake Failure

Need More Information on the Code?

Need more information on how to fix the B1A8A code? Get Access to Factory Service Manuals

Information for Specific Makes

Need Help with the Code?

Get the B1A8A code diagnosed by a professional: Find a repair shop in your area

Code B1A8A comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B1A8A code? Have you replaced any parts?
Any information is appreciated. Thanks