3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
So the SES light is on and I got the codes read at AutoZone and came up with the following:
P0128: Coolant Temperature Below Thermostat Regulating Temperature
Probable cause is a faulty thermostat which, I hear, is a common problem in e46's.
P1193: Post Catalyst fuel trim system bank 2
Probable cause is a faulty MAF meter.
The engine heats up fine...maybe a little slow, but it doesn't over heat. So I'm assuming the Thermostat is stuck open. Either way I think I'll leave that until the spring to replace and just keep an eye on the temp.
As far as the 1193 code, have you guys seen that before? I found some cheap, new MAF's on ebay for $75...which is way better than the $300+ that Bav Auto is selling them for. Since then, I've cleaned the MAF with MAF cleaner and I kinda think I'll just wait it out to see if the codes disappear after a few weeks.
The car runs normal. It seems exactly the same as it always has...just that dumb SES light.
Am I right in thinking all this? Would you guys have any recommendation as to what I should do?
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.