Searching a hybrid code often brings up a service bulletin for a different country. It can be useful technical evidence, but the vehicle application and repair route still need checking. Toyota’s inverter bulletin provides a clear example.
The published scope
Toyota T-SB-0003-21 Rev1, revised in February 2023, covers specified US-market 2010–2015 Prius and 2012–2017 Prius V vehicles with P0A94, P324E, P0A1A and/or P3004. It directs diagnosis towards identifying the affected parts within the inverter/converter assembly. It supersedes T-SB-0036-16. Read the Toyota bulletin hosted by NHTSA.
This is a manufacturer-reference summary, not a reported AXION job. It does not establish UK warranty coverage, a recall entitlement or automatic applicability to another Toyota or Lexus model.
What to preserve from your car
Send the exact model, year, full hybrid scan and any detail or information codes. Include whether the vehicle reaches ready mode, has reduced power or has stopped operating. Mention previous inverter, cooling-system or battery work, and retain the existing diagnostic report.
A warning-light photograph is useful alongside those records, but cannot identify which inverter component needs attention. Nor should a parts list in an online bulletin be treated as a shopping list before diagnosis.
Arrange the vehicle assessment first
Inverter work involves high voltage. Do not remove covers, disconnect orange cables or post an inverter solely because a search result matches the code. Discuss the evidence and suitability with a qualified workshop first.
Send AXION your inverter-fault enquiry. For another type of hybrid warning, the EV and hybrid library includes isolation, charging and battery-management topics.
Reviewed September 2026. Use the complete manufacturer-specific fault description and vehicle repair information.