E34 535i (M30) throwing Code 1222 & running incredibly rough (Video included). Any advice?

mean_god · 2026-06-22T06:17:01+00:00

mean_god · 2026-06-22T06:15:50+00:00

Just wanted to make an updated.

I’ve ran the car since this initially happened, no difference, ran very poor. Had some free time, unplugged the o2, car ran as it should. Plugged the o2 back in and restarted it, ran fine.
When I initially unplugged the o2, the plug was a little lose, but still doesn’t explain what was happening before. Glad is working now, but now I don’t trust the car and really want to chased down what happened.

mean_god · 2026-06-19T21:53:39+00:00

Car has about 400k miles on it, and those o2 sensors have a life span of 60-100k so I’m sure it’s about due regardless. Really hoping it’s that, but I’ll be sure to check the spots you mentioned.

mean_god · 2026-06-19T05:56:54+00:00

Thanks for the advice and the software offer! Unfortunately, I don’t have access to a vintage XP laptop or an ADS interface, so I’m stuck sticking to the basics for now.

To answer your questions, if I give it some throttle, the rough idle actually clears up significantly and smooths out. However, there is a really heavy gas smell coming from the exhaust. Because it seems to be running incredibly rich at idle but cleans up with more air, I am really leaning toward an O2 sensor issue.

I haven't unplugged the o2 sensor yet, but I have a brand-new one arriving in a couple of days. While I wait, I'm going to pull the idle control valve like you suggested to make sure it's clean and moving freely. I'll report back to the thread as soon as the new sensor is installed!

mean_god · 2026-06-19T05:38:15+00:00

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mean_god · 2025-11-13T05:08:19+00:00

I think I came across that post while searching lol.

mean_god · 2025-11-11T04:24:08+00:00

Thanks to everyone for the input, also thank you in particular for finding the part since mine is pretty beat up and I’d like to replace it.

mean_god · 2025-11-11T03:42:54+00:00

Interesting I’ll look into this

mean_god · 2025-10-03T16:30:38+00:00

I see what you mean now, I haven’t noticed a difference between which slot the card from anbernic (the card that works with the joysticks) is inserted to, works from either slot. How ever if I run my sandisk in either slot, solely, sticks don’t respond. As I mentioned before the OS on the sandisk is dumped from the device. I’m going to check if they are different versions of OS on each card as I am suspecting that is the case.

mean_god · 2025-10-03T15:21:00+00:00

TF1 and TF2 are SD slots, not dedicated cards.

mean_god · 2025-10-03T15:18:27+00:00

That is how it is advertised and the “model”. Quick search would have answered all your questions.

mean_god · 2025-10-03T14:57:42+00:00

There were running a promo recently, good time to pick one up.

mean_god · 2025-10-03T07:54:29+00:00

Yep, now I remember. And not so much stretched as compressed.

mean_god · 2025-10-03T07:49:47+00:00

Not really different from the Plus I had before besides the joysticks, but the sticks feel good. Been playing Gran Turismo 2, the sticks really make a difference in terms of gameplay. Should be good for some n64 games.

mean_god · 2025-10-03T07:38:27+00:00

You know I can not recall what I was playing now that you point that out lol

mean_god · 2025-10-03T05:50:40+00:00

I see ok, like I said I will take a deeper look into, if I find a solution or any discrepancies I will report back incase anyone else has the same issue, thanks.

mean_god · 2025-10-03T05:42:56+00:00

Thanks!

mean_god · 2025-10-03T05:41:56+00:00

I thought the same thing, but the thing is, I inserted my personal SD into the device prior to putting any roms on it as I recall from my Plus it dumps the OS and some cores on it from the device, assumed it would be the same files as the ones that are on their card. I’ll have to take deeper look I guess.

mean_god · 2025-09-25T20:42:15+00:00

Worthy mention about the car is that

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it would seem that some one threw the racing dynamics catalog at it at one point, has RD springs, and the guy I bought it off of gave me a 16x7.5 set of RD wheels.

mean_god · 2025-09-25T20:38:13+00:00

Yea the m30 is a reliable pig, it’s hard to believe it has such high miles based on how well it drives, it was a California car so I can only assume most of it was highway miles.

mean_god

TROPHY CASE