P3004High-voltage power source fault (hybrid inverter)

• Toyota/Lexus code · Hybrid system
• Turns on the check-engine light

How the car detects it

A fault inside the hybrid inverter, the unit that converts battery power for the electric motors. On 2010-2014 Prius and 2012-2014 Prius v, Toyota names this code (alone or with P0A94 and P0A1A) as a sign of a failed power module in the inverter, covered by an extended warranty; check with a Toyota dealer. The car usually goes into a fail-safe mode with reduced power. A hybrid warning shows the system protecting itself; if the car limits power or won't go into READY, stop somewhere safe and get help.

What you may notice

• Check-engine light
• Hybrid system warning on the display
• Reduced power (fail-safe mode)

Likely causes

• PossibleInverter power module (IPM) or MG control board
• RareInverter wiring or connectors

Sources

• static.nhtsa.gov › MC-10140583-9999.pdf · official document
• static.nhtsa.gov › MC-10109602-9999.pdf · official document
• toyota-club.net › hv_p410.htm

Backed by an official manufacturer document.

From Obdaryn's Toyota/Lexus pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.