P3190Poor engine power

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

How the car detects it

The hybrid system found that the petrol engine delivers less power than expected. The cause is on the engine side: air, fuel or ignition. On 2010-2013 Prius and 2012-2013 Prius v, Toyota found a detached purge (EVAP) hose at the throttle body causing this together with P0A0F and P3191; on 2017-2018 Highlander Hybrid an engine software update addresses it at high altitude and heat.

What you may notice

• Check-engine light
• Weak acceleration

Likely causes

• PossibleAir leak, such as a detached vacuum or purge hose
• PossibleFuel supply problem, such as low fuel or a weak pump
• RareDirty air filter or throttle body

Sources

• static.nhtsa.gov › MC-10111144-9999.pdf · official document
• static.nhtsa.gov › MC-10143923-9999.pdf · official document

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.