# Service bulletin TSB\-0033\-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: 10240057
- Published by NHTSA: 2023\-07\-31
- Manufacturer's number: TSB\-0033\-23
- Manufacturer's date: 2023\-06\-08
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE

## NHTSA's summary

TSB: Some 2020 ? 2023 model year Highlander Hybrid and 2021 ? 2023 model year RAV4 Hybrid, RAV4 Prime, Sienna Hybrid, and Venza Hybrid vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes \(DTCs\) present: ?P24517F ? Evaporative Emission System Switching Valve Actuator Stuck Off. ?P14502A ? Fuel Tank Pressure Sensor Signal Stuck in Range.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10240057-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10240057-9999.pdf)

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

## Components

Engine, Exhaust and emissions, Fuel system

## Trouble codes named

P1450, P2451

## Vehicles listed

- 2020 to 2021 TOYOTA HIGHLANDER
- 2023 TOYOTA HIGHLANDER
- 2020 to 2023 TOYOTA HIGHLANDER HYBRID
- 2021 to 2023 TOYOTA RAV4
- 2021 to 2023 TOYOTA RAV4 HYBRID
- 2021 to 2023 TOYOTA RAV4 PRIME
- 2021 to 2023 TOYOTA SIENNA HYBRID
- 2021 to 2023 TOYOTA VENZA HYBRID
- 2021 to 2023 TOYOTA redundant SIENNA
- 2021 to 2023 TOYOTA redundant VENZA

## Recalls for the same vehicles and component

- [20V162000](/recalls/nhtsa/20V162000.md), 2020-03-19: ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY

## 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.
- [24TE04](/bulletins/11037186.md), 2026-09-09, Warranty extension: ENGINE. Although the flow shut\-off valve is covered by Toyota’s New Vehicle Limited Warranty for 36 months or 36,000 miles \(whichever comes first\), we at Toyota care about the customers’ ownership experience. Toyota is providing coverage for repairs related to Flow Shut\-off Valve Coolant Leak.
- [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.
- [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.
- [T\-SB\-0104\-21 Rev2](/bulletins/11029896.md), 2026-03-07, Service bulletin: ENGINE. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.

JSON: [/v1/bulletins/10240057](/v1/bulletins/10240057)

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