Hi,
I have some issues with the CAN lambda and mu G4x PNP for the 3S-GTE ST215 (latest firmware), I have now added a capacitor 22uf to the supply with no luck.
We have monitored the power supply and it is fine while the error occurs. After intensive testing to reproduce the issue I am starting to think that this might be a software issue.
When I start the car from "cold" I never see the issue, however if I shut the car down and restart within a 2-3 minutes so I see the "Heated too long" issue and often the sensor falls off after a period before it finally returns to life some minutes later.
I can reproduce the issue consequently using the same procedure and by avoiding shutting the car off while waiting in lineup I have just completed an entire race weekend without problems normally it occurs 4-5 times.