# Service bulletin B23\-029

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: 10245558
- Published by NHTSA: 2023\-11\-29
- Manufacturer's number: B23\-029
- Manufacturer's date: 2023\-11\-17
- NHTSA component: POWER TRAIN; ENGINE AND ENGINE COOLING

## NHTSA's summary

Service Bulletin \- The lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock up piston. The reduced lock\-up clutch capacity results in the transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245558-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245558-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Trouble codes named

P0741

## Vehicles listed

- 2017 to 2018 ACURA RDX

## Other bulletins for the same vehicles and component

- [ONL6T806032025 Acura Lett](/bulletins/11019894.md), 2025-07-01, Other: POWER TRAIN. Owner Notification Letter \- Under certain circumstances, the torque converter lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock\-up piston. The reduced lock\-up clutch capacity results in the transmission indicator flashing “D” and sets DTC P0741 Torque Converter Clutch Circuit Performance or Stuck Off.
- [ONL6T806032025 Acura Form](/bulletins/11019892.md), 2025-07-01, Other: POWER TRAIN. Owner Notification Letter \- Under certain circumstances, the torque converter lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock\-up piston. The reduced lock\-up clutch capacity results in the transmission indicator flashing “D” and sets DTC P0741 Torque Converter Clutch Circuit Performance or Stuck Off.
- [B23\-029](/bulletins/11017329.md), 2025-04-29, Service bulletin: ENGINE. Service Bulletin \- The lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock up piston. The reduced lock\-up clutch capacity results in the transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
- [BEBM04182025901](/bulletins/11017327.md), 2025-04-29, Other: ENGINE. Dealer Message \- Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock\-up piston. The reduced lock\-up clutch capacity results in the MIL not illuminating. “D” flashes and “Transmission Overheat” message appears setting DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
- [B23\-029](/bulletins/10251152.md), 2024-03-04, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. Service Bulletin \- The lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock up piston. The reduced lock\-up clutch capacity results in the transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
- [B23\-035](/bulletins/10248978.md), 2024-01-17, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Service Bulletin \- The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 \(Evaporative Emission \(EVAP\) System Purge Flow Malfunction\).
- [B23\-035](/bulletins/10247626.md), 2023-12-23, Service bulletin: ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. Service Bulletin \- Due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 \(Evaporative Emission \(EVAP\) System Purge Flow Malfunction\).
- [B23\-029](/bulletins/10241888.md), 2023-09-06, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; ENGINE AND ENGINE COOLING. Service Bulletin \- The lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock up piston. The reduced lock\-up clutch capacity results in the Malfunction Indicator Lamp \(MIL\) and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
- [BBOM08312023901](/bulletins/10241881.md), 2023-09-06, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. Dealer Message \- Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock\-up piston. The reduced lock\-up clutch capacity results in the MIL illuminating and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
- [BTI\&04132022901](/bulletins/10211102.md), 2022-05-06, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. Dealer message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2016\-2020 MDXs, RDXs \& TLXs with a client complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\), P0171 \& P0174 \(Rear/Front Bank Fuel System Too Lean\), or P219A\&B \(Air\-Fuel Ratio Variation of Cylinder\) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

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