U11B9

DTC U11B9, sometimes indicated as U11B900 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle user network.

DTC Trouble Code Search

Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

LTT-0322-23 - ELECTRICAL SYSTEM
LEXUS: Tt: vehicle may exhibit one or all in combination of the following dtc U115687 or U11B900 or U11B987 or U11BF87 shortly after short pin installed during pds/pdi.
L-TT-0322-23 - ELECTRICAL SYSTEM
LEXUS: Tt: vehicle may exhibit one or all in combination of the following dtc U115687 or U11B900 or U11B987 or U11BF87 shortly after short pin installed during pds/pdi
T-TT-0730-23 - ELECTRICAL SYSTEM
TOYOTA: Tt: vehicle may exhibit one or all in combination of the following dtc U115687 or U11B900 or U11B987 or U11BF87 shortly after short pin installed during pds/pdi.
LTT032223 - ELECTRICAL SYSTEM
LEXUS: Tt: vehicle may exhibit one or all in combination of the following dtc U115687 or U11B900 or U11B987 or U11BF87 shortly after short pin installed during pds/pdi.
A9119912056231_1 - EQUIPMENT
AUDI: This bulletin contains repair instructions for when the mmi volume is not working but the steering wheel volume control is. May or may not have dtc U11B900 stored.