2021 Hyundai Palisade — catalyst efficiency code but car drives normally

If it were in my driveway, loaded-suspension checks on the 2021 Hyundai Palisade catch play that a wheels-hanging inspection misses. That's the branch I'd chase this week. Have you gotten a second quote in writing? I'd rather be boring and correct. Not driving it hard until I know more.

It did catalyst efficiency code but car drives normally twice this week, both times after sitting. No change in mileage feel. Checking again after work.

Cleared nothing. I want service to see the alert on the 2021 Hyundai Palisade first. I'll poke at it this weekend.

I wouldn't throw parts yet. If a shop can't duplicate it on the 2021 Hyundai Palisade, bring a video plus freeze-frame data, not just a story. You'll know quickly if you're on the wrong tree. Did the worksheet show tax yet? Checking again after work.

Intermittent stuff lies if you only catch it once. Get a real battery/charging test on the 2021 Hyundai Palisade, not just resting voltage, before blaming a module. Save the big job until that test fails. On “catalyst efficiency code but car drives normally,” that was the fork that mattered for me. Post the numbers (or the code) and people can get more specific. This is the filter I use when the thread starts repeating itself. Only after sitting overnight so far.

I'd want a measurement, not a hunch. A pressure test beats staring at a dry driveway if the 2021 Hyundai Palisade is losing coolant with no puddle. Don't erase codes until someone who can help has seen them. This is from a 2021 Hyundai Palisade in Orlando. Run the total, not the monthly, before you commit. Wrote this up on my lunch break.

I wouldn't throw parts yet. Write temp, speed, and in-gear vs coast when the 2021 Hyundai Palisade does it — then decide on parts. Save the big job until that test fails. Had a similar mess a couple years ago and that's what finally sorted it. Not driving it hard until I know more.

This is usually cheaper to test than to guess. Move a coil or plug on the 2021 Hyundai Palisade if it's cylinder-specific and see whether the code follows. Don't erase codes until someone who can help has seen them. Verbal 'we'll take care of it' is not a plan. Not interested in a five-hour wait for a shrug.

Log the conditions before you spend. Get a real battery/charging test on the 2021 Hyundai Palisade, not just resting voltage, before blaming a module. If the cheap test changes it, stop and reassess. On “catalyst efficiency code but car drives normally,” that was the fork that mattered for me. If they can't show the line item, I assume it's hiding. Only after sitting overnight so far.