Service bulletin T-SB-0081-24

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	11010094
Published by NHTSA	2024-11-06
Manufacturer's number	T-SB-0081-24
Manufacturer's date	2024-09-23
Campaign id or software version	T-SB-0081-24
NHTSA component	ENGINE

NHTSA's summary

Some 2023 – 2024 model year Corolla and Corolla Cross vehicles with M20A-FKS engines may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: •P11EA00 – (Bank 1 Air-Fuel Ratio Imbalance (Port)) •P013A7C – (A/F Sensor – Rich to Lean Bank 1 Sensor 2 Slow Response) There are no drivability issues or other symptoms associated with this condition.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Trouble codes named

P013A, P11EA

Vehicles listed
TOYOTA COROLLA	2023, 2024
TOYOTA COROLLA CROSS	2023, 2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
T-SB-0110-20 Rev2	2026-09-09. Service bulletin. OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T-SB-0051-26.
T-SB-0051-26	2026-09-09. Service bulletin. This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV) Ni-MH and Li-ion batteries.
T-SB-0104-21 Rev2	2026-03-07. Service bulletin. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.
T-SB-0088-23 Rev2	2025-09-09. Service bulletin. OBSOLETE NOTICE August 19, 2025: This bulletin is now obsolete. Please see T-SB-0059-25.
T-SB-0059-25	2025-09-09. Service bulletin. Some 2020 – 2025 model year Corolla vehicles may exhibit a vibration or rattle noise from the right-hand engine mounting insulator sub-assembly. This condition will usually go away when the engine’s Revolutions Per Minute (RPM) are above idle. This condition is typically found on vehicles in warm climates/weather. No Diagnostic Trouble Codes (DTCs) are associated with this condition. This condition does not affect the operation of the vehicle.
T-TT-0784-25 Rev1	2025-07-10. Service bulletin. Some ECUs can set a DTC that is common with other ECUs. This can lead to accidental use of the wrong repair manual when diagnosing these type of DTCs.
T-TT-0784-25	2025-07-10. Service bulletin. Some ECUs can set a DTC that is common with other ECUs. This can lead to accidental use of the wrong repair manual when diagnosing these type of DTCs.
T-SB-0021-25	2025-04-08. Service bulletin. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.
T-SB-0107-20 Rev2	2025-03-25. Service bulletin. OBSOLETE NOTICE February 11, 2025: This bulletin is now obsolete. Please see T-SB-0021-25.
T-SB-0021-25	2025-03-11. Service bulletin. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.