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Pesky s52 OBD2 codes

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    #1

    Pesky s52 OBD2 codes

    Hey guys, I'm currently trying to figure out and research my pesky s52 obd2 problems..

    Found these codes:

    P1519
    -So I replaced the vanos (dr.vanos) and camshaft sensor and I still got the P1519 error code again..

    P0170 (Fuel Trim)
    -vac leaks?

    P0304,5,6 (Misfires in cylinders)
    -When I let off the throttle and decelerate, the car does "backfire" by making some popping sounds out the exhaust. I believe this to trigger the misfire codes? I noticed that the O2 sensor doesnt fluctuate in voltage, is this the cause? I did replace 1 of the 2 sensors recently.. Any other things to check?


    Any tips or pointers would help! thanks guys

    91 Alpinweiss2 318is OBD2 S52
    Tags: None
    #2
    Did you send your DME to TRM for a flash?

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      #3
      Cam timing is spot on?
      john@m20guru.com
      Links:
      Transaction feedback: Here, here and here. Thanks :D

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        #4
        What do the fuel trim values look like?

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          #5
          When did the codes start poping up? Did you do anything to the engine before the codes?

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            #6
            Originally posted by plain325 View Post
            Did you send your DME to TRM for a flash?
            -Yes, Dave at markert motor works I believe sends his there to get tuned.

            Originally posted by ForcedFirebird View Post
            Cam timing is spot on?
            -When reinstalled vanos I made sure to double check the timing was all correct

            Originally posted by bimmerteck View Post
            What do the fuel trim values look like?
            -I hooked up my scanner that i can see on my iphone. either it is not giving my trim values or they all stay at 0%..

            Originally posted by DesertBMW View Post
            When did the codes start poping up? Did you do anything to the engine before the codes?
            -I noticed that the 1519 code came up as pending code, the misfire codes i believe came on while driving. Fuel trim might of been a pending one as well.

            -The 1519 led me to believe i needed to replace the cam sensor or vanos, so i did both..
            Last edited by ClausE30; 11-12-2013, 08:54 PM.

            91 Alpinweiss2 318is OBD2 S52

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              #7
              Make sure the vanos isnt plugged into a knock sensor

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                #8
                -I noticed that the 1519 code came up as pending code, the misfire codes i believe came on while driving. Fuel trim might of been a pending one as well.

                -The 1519 led me to believe i needed to replace the cam sensor or vanos, so i did both..
                Ok so you drove the car for a year then all of the sudden the codes started popping up after one year of trouble free running?

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                  #9
                  Originally posted by DesertBMW View Post
                  Ok so you drove the car for a year then all of the sudden the codes started popping up after one year of trouble free running?
                  Nope I have barely put any miles on the car., for some reason my cel wasn't working after I "finished" the swap.. So I hooked up a scanner and got some codes


                  Originally posted by JohnyEndo View Post
                  Make sure the vanos isnt plugged into a knock sensor
                  Ill make sure to check that later, the harness was pre labeled when I received it. Do they have similar electrical plugs?

                  91 Alpinweiss2 318is OBD2 S52

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