2008 BMW 535i N54
After replacing my alternator cause it was shot , (I also replaced my belt) my car is giving me the engine malfunction low power and these codes . Any thoughts? I’m at a loss
I think I left the ground on my alternator a little loose gonna check that and the alternator is working checked with volt meterAre these all new codes, or is it possible that they all occurred when your car was suffering from low voltage due to the bad alternator? At any rate, it would be helpful to throw a voltmeter on your battery buss and see what kind of voltage you DO have (verifying that the new alternator is working, which isn't always the case, either due to a bad new alternator, or wiring / control problem).
Can a catalytic converter code have any correlation with my issue it just popped a celIf you're getting it under heavy throttle around 2,500 RPM I'd think it's wastegates. But definitely worth searching for boost leaks elsewhere. Vacuum lines to boost solenoids is also worth investigating, and the solenoids themselves.
I would generally think a catalytic converter code would mostly have to do with emissions and not much else, but I could certainly be wrong. I've never encountered problems with cats before so I haven't spent time diagnosing them.Can a catalytic converter code have any correlation with my issue it just popped a cel
What do you mean the actual code?The one exception to the cats affecting only the rear O2 sensor's readings is when one is clogged to the point that it creates a lot of back-pressure. If this is the case, the car may run more or less correctly until you start pushing it - the more throttle, the more back-pressure, and the less the turbo(s) will do their magnificent job(s). But you have to give us the actual code (and even then, it's a bit of a guess that's based on symptoms, too).
Is that also why I’m getting the engine malfunction and feeling limp ? Just no turbos ?30ff means the turbos were deactivated. There is no single reason why as far as I can tell. I'm about to replace the two turbo solenoids on our 535xi to see if it helps. I think the computer can turn off the turbos whenever something gets too far out of spec too.