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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old February 11th, 2014, 14:45   #1
robertyateman
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Join Date: Jun 2011
Location: Kingston Ontario Canada
TDI(s): 1999.5
Default MAF CEL help

Hey i have a 1999.5 jetta tdi manual

so the problems i keep getting is this code 17553/P1145 - Mass Air Flow Sensor (G70): Short to Plus. My car also will go into limp mode if i punch the accelerator or go up a hill, ect. with my vagcom i went to ch 3 and under the actual was ~530 or something and it didnt move no matter the rpm.

i just recently tried a used maf from a 2001 so maybe it was toast to. the connections themself look good on the maf and the plug.

Any advice on were to troubleshoot i dont have a bently manual so i dont know the wiring diagram of the maf or fuses ect.

Thanks, Robert Yateman

Last edited by robertyateman; February 11th, 2014 at 16:03.
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Old February 11th, 2014, 15:55   #2
robertyateman
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tuns out pin 2 has 4.5v coming to it and pin 4 has 11.8v going to it so i image its either a grounding issue or bad maf ?
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Old February 12th, 2014, 19:42   #3
Dimitri16V
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nope , voltages are right

the ECU always defaults to 5V in that pin when you disconnect the MAF

Use a MAF cleaner to clean the sensor . are you sure the plug is OK ?
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Last edited by Dimitri16V; February 12th, 2014 at 19:45.
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Old February 14th, 2014, 12:03   #4
robertyateman
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i tried my friends maf off his 2000 vr6 and it still through the code plus it was reading the same 530mg/H as the other two .
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Old February 14th, 2014, 12:12   #5
BobnOH
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Have you checked for blockage at the snowscreen? Could also be a blown fuse or a bad wire. I've found no less than 2 nicked wires on mine.
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Old February 14th, 2014, 12:23   #6
robertyateman
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no i havent i removed the maf from airbox and let it suck fresh air and still the same readings. what fuses ? i am going to splice the ground wire from the plug and ground it myself see if that does anything.
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Old February 14th, 2014, 12:26   #7
robertyateman
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would that work or would it just mess up the ecu ?
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Old February 14th, 2014, 12:48   #8
BobnOH
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It would be best to use the ground as it's designed, manually grounding certain wires will produce undesirable results. Try following the ground wire and the signal wires. Look for any breaks or bad connections.
Check fuses 12, 29, 32 and 34 first.
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Old February 14th, 2014, 13:11   #9
oilhammer
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Check all your fuses.
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Old February 14th, 2014, 13:16   #10
robertyateman
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ok i just wired in a new plug and ill check fuses now ill let you know what happens in 10
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Old February 14th, 2014, 13:40   #11
robertyateman
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all fuses good. plug changed still same code g70 short to plus. I think im going to try and ground it out myself and see were that gets me because it seems really difficult to follow that wire.
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Old February 14th, 2014, 14:16   #12
robertyateman
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the headache is over i cut the green wire/ground and routed it right to the ground on the battery terminal. no codes and my maf reads the right mg/h
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