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#1
06-02-2007, 05:33 PM
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99 ML320 Code PO100
Reads MAF or VAF A Circuit Malfunction. Replaced MAF about 1 month ago with Genuine Bosch. No issues until now. What does this code mean?
Thanks for the input! 
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#2
06-02-2007, 06:11 PM
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P0100
MAF circuit trouble Hot film MAF sensor B2/5 did you replace the air filter at the same time? was it a complete maf or just the sensor? Quote:
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1967 250 S 1967 280SE 1968 250S 1971 280 SE 1973 220 1974 280 S 1975 450 SEL 1976 220 D 1979 300SD 1983 300 SD 1985 230 TE euro 1986 280SL 1986 500 SEL euro 1986 190E 2.3 1990 300 SE 2003 C230 K 2004 C230 K 1987 560SEL 1987 300SDL now in canada 2005 C230 1998 C43 AMG Sold to DON 1993 190E 2.6 300TD Former daily driver Totaled current: R320 CDI Ram 2500 Cummins
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#3
06-02-2007, 06:58 PM
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Complete unit was replaced. Did not replace filter at that time but filter is new.
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#4
06-02-2007, 08:05 PM
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theck wiring at the plug where it connects to the maf, i have seen some damaged, also good possibility your maf may be defectice ot there is a vacuum leak.
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1967 250 S 1967 280SE 1968 250S 1971 280 SE 1973 220 1974 280 S 1975 450 SEL 1976 220 D 1979 300SD 1983 300 SD 1985 230 TE euro 1986 280SL 1986 500 SEL euro 1986 190E 2.3 1990 300 SE 2003 C230 K 2004 C230 K 1987 560SEL 1987 300SDL now in canada 2005 C230 1998 C43 AMG Sold to DON 1993 190E 2.6 300TD Former daily driver Totaled current: R320 CDI Ram 2500 Cummins
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#5
06-04-2007, 07:33 PM
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Code Po110?
I replaced the gaskets at the MAF and where intake meets manifild in case of air leak. Now have a PO110 (IAT Sensor Circuit Malfunction) what could it be? This is driving me crazy!
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#6
06-05-2007, 07:55 AM
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Defective new part..
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#8
12-11-2007, 12:01 PM
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1999 ML320 MAF issue
I also had a po100 code on mi ML 320. The car would buck at speed and shut off while in idle.
This is after I cleaned the MAF with the CRC Spray.... Before the cleaning the code was po170 fuel trim bank 1 I have just disconnected the MAF wires, and it it working better. Is it the MAF of the connector? I'll take all the help I can get before going to the dealer......( temporarily unemployed, no $$$). Thanks!!!!!!!!!!!
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Linear Mode
