# Service bulletin TSB000923

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: 10235216
- Published by NHTSA: 2023\-05\-01
- Manufacturer's number: TSB000923
- Manufacturer's date: 2023\-02\-09
- NHTSA component: EQUIPMENT; SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

TSB: Some 2014 ? 2020 model year Toyota vehicles may exhibit a hard start and/or MIL ON condition with one or more of the following Diagnostic Trouble Codes \(DTCs\): ?DTC P0171 and/or P0174 \(System Too Lean Bank 1/Bank 2\) ?DTC P0087 Fuel Rail / System Pressure ? Too Low Techstream data list analysis may reveal positive fuel trims including a no pressure condition verified by a manual fuel pressure gauge. Follow the Repair Procedure in this bulletin to address these conditions.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10235216-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10235216-9999.pdf)

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

## Components

Brakes, Equipment and accessories

## Trouble codes named

P0087, P0171, P0174

## Vehicles listed

- 2014 to 2019 TOYOTA 4RUNNER
- 2018 to 2019 TOYOTA 86
- 2018 to 2020 TOYOTA AVALON
- 2018 to 2020 TOYOTA CAMRY
- 2018 to 2020 TOYOTA COROLLA
- 2019 to 2020 TOYOTA COROLLA HATCHBACK
- 2014 TOYOTA FJ CRUISER
- 2017 to 2019 TOYOTA HIGHLANDER
- 2014 to 2020 TOYOTA LAND CRUISER
- 2019 to 2020 TOYOTA RAV4
- 2018 to 2020 TOYOTA SEQUOIA
- 2017 to 2020 TOYOTA SIENNA
- 2017 to 2020 TOYOTA TACOMA
- 2018 to 2020 TOYOTA TUNDRA
- 2019 to 2020 TOYOTA YARIS

## Recalls for the same vehicles and component

- [25V876000](/recalls/nhtsa/25V876000.md), 2025-12-17: EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR:
- [2021702](/recalls/tc/2021702.md), 2021-11-17: Brakes
- [21V890000](/recalls/nhtsa/21V890000.md), 2021-11-17: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
- [2019428](/recalls/tc/2019428.md), 2019-08-23: Accessories
- [19V553000](/recalls/nhtsa/19V553000.md), 2019-07-25: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
- [2019360](/recalls/tc/2019360.md), 2019-07-24: Brakes
- [19V544000](/recalls/nhtsa/19V544000.md), 2019-07-24: SERVICE BRAKES; ELECTRONIC STABILITY CONTROL \(ESC\)
- [19V503000](/recalls/nhtsa/19V503000.md), 2019-06-28: EQUIPMENT:OTHER:LABELS
- [2019317](/recalls/tc/2019317.md), 2019-06-27: Brakes
- [19V410000](/recalls/nhtsa/19V410000.md), 2019-06-04: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS

## Other bulletins for the same vehicles and component

- [24TE05](/bulletins/11014219.md), 2025-02-12, Warranty extension: SERVICE BRAKES. Although the Brake Booster and Brake Booster Pump Assemblies are 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 coverage for repairs related to certain internal malfunctions of the Brake Booster and Brake Booster Pump Assemblies in some of the subject vehicles.
- [24TE05](/bulletins/11014218.md), 2025-02-12, Warranty extension: SERVICE BRAKES. Although the Brake Booster and Brake Booster Pump Assemblies are 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 coverage for repairs related to certain internal malfunctions of the Brake Booster and Brake Booster Pump Assemblies in some of the subject vehicles.
- [T\-SB\-0014\-25](/bulletins/11014208.md), 2025-02-12, Service bulletin: SERVICE BRAKES. Some 2017 – 2019 model year Highlander Hybrid vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following specific Diagnostic Trouble Codes \(DTCs\): C1391, C1252, C1256, and/or C1253 will be stored in the vehicle memory to be used as verification. This condition may be caused by a small internal brake fluid leak inside the brake actuator.
- [T\-SB\-0001\-22 Rev2](/bulletins/11012761.md), 2025-01-09, Service bulletin: SERVICE BRAKES. Some 2019 – 2025 model year RAV4 and RAV4 Hybrid vehicles may exhibit a squeal/squeak noise from the front brakes with light to moderate braking.
- [TSB010622](/bulletins/10252259.md), 2024-04-01, Service bulletin: EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\); UNKNOWN OR OTHER. TSB: Some 2018 ? 2022 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool \(SST\) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update, however, the process for generating license keys differs from previous generations. Before attempting to perform a map update, the expiration date of the dynamic subscription \(stored in the head unit\), must be checked. If the expiration date has not passed, a license key may be generated without the purchase of an Activation Card Number \(ACN\). Updating the map without the use of an ACN is considered an Embedded Navigation Update \(refer to pg. 10\) and performing this update does not extend the subscription to dynamic map services. If the subscription period has expired, or is expiring within the next 90 days, it should be recommended to the customer to purchase an ACN. Utilizing an ACN, will initiate the Dynamic Navigation Update \(refer to pg. 4\). This Dynamic Navigation Update will perform the embedded navigation update and provide dynamic map services for a period of two years from the date that the Dynamic Navigation Update is performed. ACNs are provided in a pamphlet available through the normal parts ordering system. Follow the process in this bulletin to perform the update.
- [TSB010421](/bulletins/10252251.md), 2024-04-01, Service bulletin: SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:COOLING SYSTEM; LANE DEPARTURE. TSB: Some 2018 ? 2024 model year Toyota vehicles equipped with an A25A\-FKS, A25A\-FXS, M20A\-FKS, or M20A\-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil. ?An ?Oil Pressure Low? warning message on the Multi\-information Display \(MID\). ?A MIL ON condition with Diagnostic Trouble Codes \(DTCs\) P05202A \(Engine Oil Pressure Sensor/Switch ?A? Signal Stuck in Range\) and/or P052477 \(Engine Oil Pressure Too Low \[Severe\]\) present. Moisture from blow\-by gases condenses and accumulates in the engine oil during short trips in extreme cold weather. When the moisture in the oil freezes, the oil pressure may drop, and the aforementioned warning indicators may display. Follow the procedures in this bulletin to address these conditions.
- [20TD01a](/bulletins/10252246.md), 2024-04-01, Service bulletin: UNKNOWN OR OTHER; EQUIPMENT ADAPTIVE/MOBILITY. TI: 20TD01 Expired on March 31, 2023 TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN 20TD01 POTENTIALLY INCORRECT CARPET FLOOR MATS CERTAIN 2012\-2019 Sequoia
- [20TD01](/bulletins/10252245.md), 2024-04-01, Service bulletin: EQUIPMENT. DP: 20TD01 Expired on March 31, 2023 There is a possibility that some of the involved 2012\-2019 Sequoias received a Toyota Genuine carpet floor mat set that is designed for different model year Sequoia vehicles \(model years 2008\-2011\). If installed, the driver?s floor mat would not be secured in the way it was designed due to differences in the attachment grommets
- [K0D\_TIS\_ProgramO](/bulletins/10251756.md), 2024-03-18, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. K0D expired on 10/31/2023.
- [K0D\_TIS\_Technica](/bulletins/10251742.md), 2024-03-18, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. TI: K0D expired on 10/31/2023. TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN K0D FRAME CORROSION RESISTANT COMPOUND \(CRC\) APPLICATION CERTAIN 2011 ? 2015 MODEL YEAR TACOMA

JSON: [/v1/bulletins/10235216](/v1/bulletins/10235216)

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