Clearing the Infiniti B Codes

This bulletin applies to 2017-2019 Infiniti QX30, 2016-2017 Q50, 2016-2017 Q50 Hybrid, 2017 Q60, 2018-2019 Q70 and 2018 Q70 Hybrid vehicles, equipped with Telematics.
Diagnostic information in the ESM may be missing or incorrect.

Information courtesy of Mitchell 1

Mike Mavrigian

May 13, 2022

This bulletin applies to 2017-2019 Infiniti QX30, 2016-2017 Q50, 2016-2017 Q50 Hybrid, 2017 Q60, 2018-2019 Q70 and 2018 Q70 Hybrid vehicles, equipped with Telematics.

Diagnostic information in the ESM (electronic service manuals) for the following DTCs may be missing or incorrect:

B2EF0 (internal battery..circuit volt below threshold)
B130C (TCU/Telematics Control Unit..pairing error_

If DTC B2EF0 is stored:

1. Start the engine and let it idle for 30 minutes to allow charging of the TCU internal battery.

2. Erase the DTC. If the DTC erases, the repair is complete. If it does not erase, replace the TCU.

If DTC B130C is stored:

1. Collect all keys and then re-register them to the vehicle.

2. Erase the DTC. If it erases, the repair is complete. If it does not erase, replace the TCU.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.