Is there an easy way to chec GTR 02 sensors?

[ricknismo]

Multimeter somewhere?

Any hints?

[blind_elk]

Open out a paperclip and jam it down the middle wire of the connector plug. Connect the multimeter +ve to the clip, and the -ve to earth. Set scale on 12V DC. At around 2000 rpm, voltage should vary between 0 - 1 V

[R32Big_boy]

Check your ecu, if it shows the error code then there's probablly an issue there.

Search if you want to know how to put the ecu into diagnostic mode.

Good luck with it all.