NHTSA Investigation
PE09054
Engine Stalling
Key Takeaways
- Investigation PE09054 currently maps to 2 tracked vehicle-year pages across 1 make.
- This page summarizes the public investigation subject, status, timing, and affected tracked vehicles linked from NHTSA source data.
- The linked component on this record is engine and engine cooling.
- This investigation record also references recall campaign 10V384000.
What This Investigation Page Shows
This page summarizes a public NHTSA investigation record tied to one or more tracked vehicle-year pages in our database. Investigation records sit between owner complaints and recall campaigns: they can remain open, close without a recall, or connect to a later remedy action. Use this page to see which tracked vehicles are linked to the record, then open the individual vehicle pages for complaints, recalls, and crash test context.
Investigation Summary
On November 30, 2009, the Office of Defects Investigation (ODI) opened a preliminary evaluation (PE09-054) to investigate alleged engine stalling, while driving in model year (MY) 2006 Toyota Corolla and Corolla Matrix vehicles .In its response to ODI's information request submitted on March 2, 2010, Toyota indicated that it had identified two possible causes of production defects of the engine control units (ECU) used in the MY 2005 through 2007 Corolla and Matrix vehicles equipped with the 1ZZ-FE engine.Failure mode A1 - BGA ball failure caused by improperly cured conformal coating applied to ECU circuit boards. This can cause cracks to form in the soldered joints of some components. Failure mode A2 - Varistor over heating; a glass coating is created on the surface of the Varistor during its production process.In case of an insufficient coating, a crack can occur in the surface of the glass coating. When ions are charged in the plating electrolytes after the glass coating process, the plating electrolytes can penetrate into the Varistor through the glass crack then an electrical short occurs. With respect to these failures, if the condition arises, it can potentially lead to one or more of the following: MIL on, engine stall or engine no start, harsh shifting.Of the approximately 155,000 warranty and extended warranty claims Toyota has analyzedthe projected 5 year failure rate of the ECU associated with an engine stall is 0.8%. This investigation has been upgraded to an Engineering Analysis (EA10-006) to further assess the scope, frequency and safety risks associated with the identified defects.
Manufacturer listed on the source record: Toyota Motor Corporation
Component listed on the source record: ENGINE AND ENGINE COOLING
Affected Vehicles (2)
Browse Affected Vehicles
Affected Models
Affected Years
All data is sourced from NHTSA public records. This site is not affiliated with, endorsed by, or operated by the National Highway Traffic Safety Administration or any government agency. Complaints are unverified consumer reports submitted to NHTSA and may not reflect confirmed defects. For official information, visit nhtsa.gov.
Data synced from NHTSA on May 4, 2026