GR Yaris High Pressure (DI) Fuel Sensor Failed on Track

[ninjan00dles]

Just documenting this for others.

Our development car had a high pressure fuel sensor fail midcorner at high rpm on track (Sonoma Raceway) several weeks ago.
Ecutek / ECU did what it was supposed to do - it lost high pressure signal and instantly went into port injection only mode / limp mode and lowered the redline.

Installed a new sensor and all is good again.

CEL was P0190-11


2023 GR Corolla, 12+ track days, 44000 miles (~ 71000 km)
Ecutek w/ flex fuel. Stock fueling otherwise.

 

[Michael Knight]

any idea why did the sensor go? ethanol or just broke down?

 

[Orion]

My 2021 GRY, 102000km (3000 track km) did the exact same thing on a public road, luckily I wasnt overtaking.
CEL, same code, limp mode, hard cut at 2k RPM, those 30km limping home werent a joyride
Unfortunately wasnt allowed to open the sensor cover, as the workshop had to return it. Covered under warranty.
Could it be related to the increased boost/fuel demands of the Toyota remap done 2000km ago...?

 

[Sekred]

I would not say it's a common issue but its, say a known issue. I think there is a thread on this forum or the other about it.
Keeping one as a spare is not a bad idea. Google the part number to find the best price otherwise you may pay way too much.