# Service bulletin T\-TT\-0733\-23

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: 10236209
- Published by NHTSA: 2023\-05\-15
- Manufacturer's number: T\-TT\-0733\-23
- Manufacturer's date: 2023\-04\-21
- NHTSA component: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

## NHTSA's summary

TT: Some 2022\-2024 MY vehicles equipped with the A25A engine may exhibit a leak from the engine water pump, and/or MIL On condition accompanied by DTC\(s\): ?P26CA14 Engine Coolant Pump Circuit Short to Ground or Open ?P26CA31 Engine Coolant Pump No Signal

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10236209-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10236209-9999.pdf)

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

## Components

Electrical system, Engine

## Trouble codes named

P26CA

## Vehicles listed

- 2022 to 2024 TOYOTA CAMRY
- 2022 to 2024 TOYOTA CAMRY HYBRID
- 2022 to 2023 TOYOTA HIGHLANDER
- 2022 to 2023 TOYOTA HIGHLANDER HYBRID
- 2022 to 2023 TOYOTA RAV4
- 2022 to 2024 TOYOTA RAV4 HYBRID
- 2022 to 2023 TOYOTA SIENNA HYBRID
- 2022 to 2023 TOYOTA redundant SIENNA

## Recalls for the same vehicles and component

- [25V595000](/recalls/nhtsa/25V595000.md), 2025-09-11: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2023382](/recalls/tc/2023382.md), 2023-07-12: Electrical
- [23V478000](/recalls/nhtsa/23V478000.md), 2023-07-12: ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER

## Other bulletins for the same vehicles and component

- [T\-SB\-0110\-20 Rev2](/bulletins/11037202.md), 2026-09-09, Service bulletin: ENGINE. OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T\-SB\-0051\-26.
- [T\-SB\-0051\-26](/bulletins/11037201.md), 2026-09-09, Service bulletin: ENGINE. This bulletin includes basic procedures for performing a rescue charge at battery on high voltage \(HV\) Ni\-MH and Li\-ion batteries.
- [26TC03](/bulletins/11037196.md), 2026-09-09, Service campaign: ENGINE. TECHNICAL INSTRUCTIONS FOR EMISSION NONCOMPLIANCE RECALL 26TC03 Certain 2022 – 2025 Model Year RAV4 Incorrect Mass Air Flow Sensor Reading
- [26TC03](/bulletins/11037195.md), 2026-09-09, Service campaign: ENGINE. In wet conditions, water contacting the radiator in the subject vehicles after idling for an extended period can create steam that can cause an incorrect engine sensor reading. This can lead to a warning light, a rough\-running engine, or a potential engine stall while idling or operating at low speeds.
- [26TC03](/bulletins/11036128.md), 2026-08-12, Service bulletin: ENGINE. TECHNICAL INSTRUCTIONS FOR EMISSION NONCOMPLIANCE RECALL 26TC03 Certain 2022 – 2025 Model Year RAV4 Incorrect Mass Air Flow Sensor Reading
- [26TC03](/bulletins/11036123.md), 2026-08-12, Service bulletin: ENGINE. TECHNICAL INSTRUCTIONS FOR EMISSION NONCOMPLIANCE RECALL 26TC03 Certain 2022 – 2025 Model Year RAV4 Incorrect Mass Air Flow Sensor Reading
- [26TC03](/bulletins/11036122.md), 2026-08-12, Service campaign: ENGINE. In wet conditions, water contacting the radiator in the subject vehicles after idling for an extended period can create steam that can cause an incorrect engine sensor reading. This can lead to a warning light, a rough\-running engine, or a potential engine stall while idling or operating at low speeds.
- [22TE09](/bulletins/11033412.md), 2026-06-04, Warranty extension: ELECTRICAL SYSTEM. Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles \(whichever comes first\), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.
- [T\-SB\-0029\-26](/bulletins/11032486.md), 2026-05-08, Over\-the\-air update: ELECTRICAL SYSTEM. A new head unit software update is available for 2023 – 2024 model year RAV4, RAV4 Hybrid, and RAV4 Prime vehicles equipped with Toyota Multimedia \(earlier than version 1861\). This software update includes the following improvements: • Usability of CarPlay® exit. • User Profile. • User interface. • Cloud navigation. • Intelligent assistant voice recognition. • Bug fixes.
- [T\-SB\-0023\-26](/bulletins/11032467.md), 2026-05-08, Service bulletin: ENGINE. Some customers may experience a rough running engine with a MIL ON P140018 DTC. Upon further inspection, a loose C90/C27 connector pin at the EGR valve may be found. To correct this concern, please reference the repair section of this TSB.

JSON: [/v1/bulletins/10236209](/v1/bulletins/10236209)

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