WenmarOpen by Wenmar Pro

Service bulletin T-SB-0012-18

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)
TypeService bulletin
NHTSA id10131753
Published by NHTSA2018-04-02
Manufacturer's numberT-SB-0012-18
Manufacturer's date2018-02-05
NHTSA componentELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); BACK OVER PREVENTION

NHTSA's summary

TSB: Some 2001 ? 2002 model year Sequoia vehicles may exhibit intermittent VSC activation. After the activation, Diagnostic Trouble Code (DTC) C1234 is stored in the skid control Electronic Control Unit (ECU) memory. Follow the Repair Procedure in this bulletin to address this condition. NOTE ? This Service Bulletin is ONLY applicable if DTC C1234 is present. If DTC C1234 is NOT present, this Service Bulletin is NOT applicable. ? The yaw rate sensor is available as a separate service part allowing it to be replaced separately instead of the entire yaw rate sensor assembly (Yaw Rate Sensor, Decel Sensor & Bracket). Ensure that the NEW service part number is ordered for the yaw rate sensor.

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

Driver assistance, Backup camera

Trouble codes named

C1234

Vehicles listed
TOYOTA SEQUOIA2001, 2002

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
TTT0636202022-06-21. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions
T-TT-0636-20 Rev2021-04-19. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-TT-0636-202021-02-16. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-TT-0010-10 Rev2018-04-02. Service bulletin. Tech Tip: Low battery voltage can contribute to a MIL "ON" condition for P0335 (Crankshaft Position Sensor Circuit) and/or P0340 (Camshaft Position Sensor Circuit) due to inconsistent rotational speed of the engine's crankshaft.