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  1. P0420 / P0430 Catalytic Converter Codes

    ///M3 Forum
    Hi all, I got some great info from previous posts on this topic, but I haven't been able to crack my problem yet. I'm hoping you all can help. 2002 M3 w/ 68K miles. CEL intermittently comes on, throwing the P0420 and/or P0430 codes. Also the "Rich to Lean sensor threshold voltage" is failing...
  2. P1183 > Replaced 02 Sensor > Oxygen Sensor Readiness not ready > P0430

    General E46 Forum
    2000 BMW 323i Auto 190k miles I had a P1183 O2 Sensor (Bank 2 Sensor 2) code, replaced Bank 2 Sensor 2 with BOSCH Direct Fit, cleared the code, performed a few drive cycles, P1183 code did not come back but Oxygen Sensor Readiness test for smog is still not complete (all other tests are...
  3. BMW E46 Rough Idle hesitation

    General E46 Forum
    Hey I have a 2004 BMW 330ci . Recently I realized my vehicle has been having rough idle and hesitation. Took it to the shop and they replaced the plugs , fuel filter and maf sensor . They also smoked the vehicle and it has no vacuum leaks on it . It has 110,000 miles . A chrck engine light came...
  4. "Service Engine Soon" P0420 & P0430. Looking for advice.

    General E46 Forum
    Hi everyone! I'm looking for some advice on fixing up my 2001 BMW 325xi. I just bought this car off craigslist for a very fair price. I've been going through the hoops of getting registered in the state of NY and the last step was to get it inspected. I was on my way to my local Pep Boys and...
  5. 330ci 03' lean & cat codes 2xBanks

    General E46 Forum
    I have 2003 330ci , was getting intermittent codes.... few months back then car ran out of gas..with less than 1/4 tank but not as low as i had ran it b4.. got gas.. good for couple days.. then sputered and died... troubleshooting confirmed it was fuelpump (similar symptoms a year before and...
  6. Cat code problems P0430

    General E46 Forum
    I have got a P0430 code some time ago and have changed both O2 senors (this car only has one pre and one post) and have also had the cat converter changed with an aftermarket unit. All worked well for about 500km then the problem came back, i keep getting the P0430 code now after about 100km. I...