2022 Lexus GX — catalyst efficiency code but car drives normally

Log the conditions before you spend. If a shop can't duplicate it on the 2022 Lexus GX, bring a video plus freeze-frame data, not just a story. You'll know quickly if you're on the wrong tree. On “catalyst efficiency code but car drives normally,” that was the fork that mattered for me. Stop there until you know. Doing the boring step first on purpose.

This is usually cheaper to test than to guess. Two 2022 Lexus GXs can feel identical and have different causes, so measure before you copy someone else's repair. You'll know quickly if you're on the wrong tree. Verbal 'we'll take care of it' is not a plan. Cold start is when I can actually reproduce it.

Checked the easy stuff on the 2022 Lexus GX and found one clue worth chasing before I book a shop. Wrote this up on my lunch break.

Start with the test that can prove you wrong. Loaded-suspension checks on the 2022 Lexus GX catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. Not gospel, but it saved me a headache. I'll update if anything new shows up.