Hello... Looking for some advice pls..
Has anyone come across error code 29F4 29F5 catalytic coverter conversion?
Got a rough idle one morning, like a misfire, on the E61.
It's a 523I 2.5 n52 engine auto.
I did not get a engine light on, gave it a couple of revs and it was sound.
Plugged it in a got these two codes.
I cleared them but they come back every couple hundred kms. Two days ago a engine light came on, it was running fine, plugged it in again and got the same codes.
I have replaced the MAF, disa valve, 4 02 sensors (pre and post cats)
I'm suspicious of it being the cats, 2 cats blocked at the same time? Two codes for two cats? Car has 184000 kms on it...
Any advice would be great
Tks