Rough idle, limp mode - codes attached

[sgroer]

Been idling rough lately. Finally so rough the car went into limp mode. 45k miles original TA. Test pipes and MPE.

I am thinking ICV or TA.

Thoughts? Thanks all!

[dpaul]

Originally Posted by sgroer

Been idling rough lately. Finally so rough the car went into limp mode. 45k miles original TA. Test pipes and MPE.

I am thinking ICV or TA.

Thoughts? Thanks all!

Maybe but maybe not - you've got four codes relating to the pre-cat O2 sensor bank 1, far more than anything else. My SWAG is crispy wires, crushed wires, corroded connectors or just a bad sensor. Easy enough to check with live reading from the sensor - many generic OBDII scanners can do this and INPA should be able to do it as well (it will for every other BMW engine I've worked on but I admit I've never tried it with the MSS60/S65).