B121E on the 2016 Honda Pilot
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 150901 | 2022-05-09. Service bulletin. This article replaces the one posted in December 2015 to extend the article?s shelf life. The issues covered are still being addressed. Are you reading a DTC B121E (climate control unit lost communication with touch control panel) on the HDS and you can?t find anything in the service information to help you troubleshoot it? Just use the troubleshooting procedure for DTC U0180 (lost communication with auto L/T); it?s the one you want. |
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| A16030 | 2021-12-13. Service bulletin. Service Bulletin - Service Manual Update: DTC B121E - The service information is missing the troubleshooting procedures for DTC B121E climate control lunit lost communication with touch control panel DTC B121E was mistakenly assigned to this vehicle and dos not apply. For troulbleshooting, use the procledures for DTC U0180 LOST LCOMMUNICATION WITH AUTOMATIC LIGHTING CONTROL UNIT/SENSOR |
| ATS-150901 V3 | 2021-05-15. Service bulletin. Are you reading a DTC B121E (climate control unit lost communication with touch control panel) on the HDS and you can’t find anything in the service information to help you troubleshoot it? Just use the troubleshooting procedure for DTC U0180 (lost communication with auto L/T); it’s the one you want. DTC B121E was mistakenly assigned to this vehicle and really doesn’t apply. We’ll be revising the DTC U0180 troubleshooting procedure to include DTC B121E. |
| ATS150901 | 2017-05-22. Service bulletin. "TECHLINE SUMMARY ARTICLE - EDITOR’S NOTE: THIS ARTICLE REPLACES THE ONE POSTED IN SEPTEMBER 2015 TO EXTEND THAT ARTICLE’S SHELF LIFE. THE ISSUES COVERED ARE STILL BEING ADDRESSED. ARE YOU READING A DTC B121E (CLIMATE CONTROL UNIT LOST COMMUNICATION WITH TOUCH CONTROL PANEL) ON THE HDS AND YOU CAN’T FIND ANYTHING IN THE SERVICE INFORMATION TO HELP YOU TROUBLESHOOT IT? JUST USE THE TROUBLESHOOTING PROCEDURE FOR DTC U0180 (LOST COMMUNICATION WITH AUTO L/T); IT’S THE ONE YOU WANT." |
| A16-030 | 2017-01-10. Service bulletin. SERVICE BULLETIN - THE SERVICE INFORMATION IS MISSING THE TROUBLESHOOTING PROCEDURES FOR DTC B121E (CLIMATE CONTROL UNIT LOST COMMUNICATION WITH TOUCH CONTROL PANEL). DTC B121E WAS MISTAKENLY ASSIGNED TO THIS VEHICLE AND DOES NOT APPLY. FOR TROUBLESHOOTING, USE THE PROCEDURES FOR DTC U0180 (LOST COMMUNICATION WITH AUTOMATIC LIGHTING CONTROL UNIT/SENSOR). |
| ATS150901 | 2017-01-05. Service bulletin. TECHLINE SUMMARY ARTICLE - ARE YOU READING A DTC B121E (CLIMATE CONTROL UNIT LOST COMMUNICATION WITH TOUCH CONTROL PANEL) ON THE HDS AND YOU CAN’T FIND ANYTHING IN THE SERVICE INFORMATION TO HELP YOU TROUBLESHOOT IT? JUST USE THE TROUBLESHOOTING PROCEDURE FOR DTC U0180 (LOST COMMUNICATION WITH AUTO L/T); IT’S THE ONE YOU WANT. |
6 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.