vendredi 22 août 2014

2004 E46 316i N46 - Check Engine Light

My 2004 E46 with 68k miles drives, idles, accelerates normally, even the economy is normal BUT I got a CEL which has started to show on the dash after I did 2hrs of driving in 32C/90F and 70% humidity weather. I have had a garage to use diagnostic tool to reset any codes, but the CEL came back on again and the 2 codes are:



a) DTC 271D - Oxygen sensor heater before cat bank 1

b) DTC 129 - Servotronic servo valve short circuit



Problem (a) reflects to part number 11787512975 or 11787512976 .... but I have a gut feeling that there is something else, anyone has a similar experience?




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