# Service bulletin B19\-004

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.

- Type: Service bulletin
- NHTSA id: 10152768
- Published by NHTSA: 2019\-02\-10
- Manufacturer's number: B19\-004
- Manufacturer's date: 2019\-01\-23
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN

## NHTSA's summary

Service bulletin \- The transmission judders, shudders, or surges while driving. The transmission fluid has deteriorated prematurely.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10152768-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10152768-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline, Automatic transmission

## Vehicles listed

- 2017 to 2019 ACURA MDX SPORT HYBRID
- 2014 to 2019 ACURA RLX HYBRID

## Other bulletins for the same vehicles and component

- [BBOM09152020](/bulletins/10180020.md), 2020-09-22, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Dealer Message \- Today, September 15, 2020, Acura is announcing a stop sale and emissions recall for certain 2017\-2020 MDX Sport Hybrid and 2014, 2016\-2020 RLX Sport Hybrid vehicles that may not properly clear specific diagnostic trouble codes \(DTC\). Presence of these codes may prevent the vehicle from passing a smog test. Refer to your eResponsibility report or do an iN VIN status inquiry to determine which units in your inventory are affected.
- [B20\-040](/bulletins/10180019.md), 2020-09-22, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:GEARS. "Service Bulletin \- When the PCM detects a malfunction in one of the odd number transmission gears, it will set one of the following DTCs: \-P073F \(unable to engage gear 1\) \-P074B \(unable to engage gear 3\) \-P074D \(unable to engage gear 5\) \-P074F \(unable to engage gear 7\) Due to inappropriate calibration of the PCM, the OBD system cannot properly clear the transmission permanent DTC as required."
- [B20\-039](/bulletins/10180018.md), 2020-09-22, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:GEARS; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. "Service Bulletin \- When the PCM detects a malfunction in one of the odd number transmission gears, it will set one of the following DTCs: \-P073F \(unable to engage gear 1\) \-P074B \(unable to engage gear 3\) \-P074D \(unable to engage gear 5\) \-P074F \(unable to engage gear 7\) Due to inappropriate calibration of the PCM, the OBD system cannot properly clear the transmission permanent DTC as required."
- [BVE02142018901](/bulletins/10129342.md), 2018-02-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. Dealer message \- Every Service Bulletin requires you to take an HDS snap shot and use the job aid or Tech2Tech to confirm the judder/shudder is coming from the torque converter.
- [B17\-034](/bulletins/10118014.md), 2017-09-27, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; ENGINE. 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](/bulletins/10117338.md), 2017-09-14, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM:SOFTWARE. Service bulletin \- The MIL comes on with DTC P0430 \(front bank catalyst system efficiency below threshold \[Bank 2\]\).
- [B16065](/bulletins/10116779.md), 2017-08-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Service bulletin \- A judder from the torque converter lock\-up clutch may be felt while driving between 20 and 60 mph. The problem is typically diagnosed as a bad torque converter. American Honda investigated the judder and found that the torque converter was not causing the judder and the transmission is not damaged by this judder. The judder was caused by deteriorated transmission fluid. The transmission fluid deteriorates quicker than expected when it is exposed to intermittent high heat loads under specific driving conditions. A software update is available to maintain the transmission fluid temperature within the desirable range under all driving conditions and eliminate the potential for this judder.
- [Service Bulletin](/bulletins/10115222.md), 2017-08-15, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Service bulletin \- The MIL comes on with DTC P2176 \(throttle actuator control system idle position not learned\). The PCM misinterprets the throttle position sensor signals and sets DTC P2176.
- [B17070B](/bulletins/10115179.md), 2017-08-15, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION. Service news article \- Because of a transmission case casting flaw, the inside of the torque converter bracket hole in some 9\-speed A/Ts is porous enough that ATF could leak from the hole. This flaw was found by the transmission factory during production.
- [B17\-019](/bulletins/10108370.md), 2017-06-30, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM:SOFTWARE. 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.

JSON: [/v1/bulletins/10152768](/v1/bulletins/10152768)

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