Service bulletin B15-050

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10100173
Published by NHTSA	2017-05-23
Manufacturer's number	B15-050
Manufacturer's date	2015-11-18
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:WIRING

NHTSA's summary

SERVICE BULLETIN - MULTIPLE INDICATOR LIGHTS ARE ON WITH DTC U129D (F-CAN MALFUNCTION) [PCM-PRECISION ALL WHEEL CONTROL UNIT]) STORED. THERE IS A BAD WIRE CRIMP IN THE REAR TOE CONTROL ACTUATOR CONNECTOR.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Transmission and driveline, Automatic transmission, Transmission control module, Wiring and fuses

Trouble codes named

U129D

Vehicles listed
ACURA TLX	2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
16V640000	2016-09-06. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
14V779000	2014-12-08. POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
BTS-151101 V2	2021-05-14. Service bulletin. Replacement TCMs don’t come with trim data. After installation, you need to run a teach-in (hydraulic pressure characteristic calibration) procedure with the HDS. The problem is that A/T DTC P287C (transmission adaptive values not learned) is set, which prevents teach-in. This happens because the TCM is programmed to look for trim data any time the ignition is cycled. If the TCM doesn’t see that trim data, it sets A/T DTC P287C. If any DTCs are set, the TCM won’t initiate teach-in and, as a result, can’t learn the trim data. It’s a classic catch-22 situation.
SB-16-012	2021-05-13. Service bulletin. BACKGROUND American Honda has made several shift quality improvements in the 2015 and 2016 TLX V6. SYMPTOM There is a sensation of acceleration while coasting down a hill. There is a sensation of a surge while braking. The transmission feels like it stays in gear too long. CORRECTIVE ACTION Update the TCM software. Clear all DTC’s created during the update and do the idle learn procedure. This software update will change the way the transmission shifts. After the update it may take up to 30 miles for the transmission to adapt to the client’s driving habits.
ONLKG503082019	2019-03-15. Service bulletin. Owner Notification Letter - Our records indicate that a PRODUCT UPDATE has not been completed on this vehicle, refer to the address card for the affected VIN. Your TLX previously had the transmission replaced because of a leaking 9-speed automatic transmission fluid (ATF) warmer. As the issue was under investigation when the transmission was replaced, your vehicle needs further action before it is completely repaired.
ONLKG203082019	2019-03-15. Service bulletin. Owner Notification Letter - Our records indicate that a PRODUCT UPDATE has not been completed on this vehicle, refer to the address card for the affected VIN. The automatic transmission fluid (ATF) warmer was improperly manufactured and may allow the engine coolant and ATF to mix. If the coolant and ATF mix, the engine and transmission may be damaged and require replacement.
B17-011	2018-03-13. Service bulletin. Service bulletin - Some 9-speed transmission warmers were improperly manufactured and allow the engine coolant and ATF to mix. If the fluids mix, the engine and transmission may be permanently damaged and require replacement.
Customer Letter	2017-12-05. Service bulletin. Customer letter - On a limited number of 2015?16 TLX vehicles, the automatic transmission fluid (ATF) warmer was improperly manufactured and may allow the engine coolant and ATF to mix. If the coolant and ATF mix, the engine and transmission may be damaged and require replacement. If the ATF warmer allows coolant and ATF to mix, you may notice one or more of the following symptoms: ? The vehicle overheats ? The transmission shifts poorly ? The transmission chirps during 3-4 shift
Customer Letter	2017-11-14. Service bulletin. Customer letter - Your 2015?16 TLX previously had the transmission replaced because of a leaking 9-speed automatic transmission fluid (ATF) warmer. As the issue was under investigation when the transmission was replaced, your vehicle needs further action before it is completely repaired.
B17-034	2017-09-27. Service bulletin. Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]). The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter.
B17-034	2017-09-14. Service bulletin. Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]).
B16110B	2017-08-31. Service bulletin. Servicenews article - We?ve created a new A/T DTC to detect abnormal circuit resistance in the clutch pressure control solenoid valve circuits. It?s A/T DTC P0901 (clutch actuator circuit range/performance).