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1.8t sport passat 2001 mass air flow sensor problem


ipswich208
06-16-2007, 05:52 AM
hi ive got a 1.8t sport passat on a 2001 reg and had the fault down to a mass air flow sensor after reseting the ecu the light came off but the fault code still came up drove to work and the light still hadnt appeared,only when i started the car from cold then it came back on and is a bit jumpy from car so could this be the maf sesor still before i fork out the money for it just want to be sure first plus got a oil leak at the drivers side of the front of the engine just on the corner cant see where its coming from either from a hose or head gasket etc are there any normal faults with oil leaks for passats any help would be great thanks:banghead:

veedubmechanic
06-18-2007, 08:43 PM
What code did you have for the mass air flow sensor?

Common oil leaks are cam seals and valve cover gaskets.

ipswich208
06-19-2007, 12:05 PM
hi the code was p0102 mass air sensor low input having the breather hoses checked on wednesday anything else to check thanks ian

veedubmechanic
06-21-2007, 10:33 PM
pull the rubber boot off the top of the air box and check if the maf sensor is plugged in all the way. Sometimes when people change air filters and unplug them they dont plug it in all the way.

ipswich208
06-24-2007, 10:05 AM
hi checked the conection all is ok all the breather hose,s have been checked two have been replaced and codes taken off ecu but 1 day after the light came back on with the same code so now ordered a new one,plus any ideas on water leaking via the drivers side floor seems to be building up with water near the ecu box is there any thing that could have been blocked etc any help would be great thanks ian

veedubmechanic
06-24-2007, 11:41 AM
CHeck under the battery for the drain and see if its clogged (you need to remove the battery and battery tray).

ipswich208
06-24-2007, 12:21 PM
hi just checked both drain holes both are ok and draining water out always holding water around the ecu holder

ipswich208
06-29-2007, 02:16 AM
found the problem with the water getting in to drivers side floor when they must have put parking sensors they put the cables via the bonnet open cable and put them through the same gromet into the car resulting in the leak into the car as cutting the gromet to get the other cbles in and for the oil leak it was the cam seal and the airflow meter was changed as well and you can tell the differnce now but cost plenty but worth it

xxzubxx
06-11-2009, 10:57 AM
hi i have a 2003 passat 1.8t auto and the engine light is on. i had a mechanic diagnose it and its been misfiring in the cylinders 1 ,3 and 4. he reset it but the fault code still appears. code 0001 - 16486 p0102 - the fault says it a mass air sporadic - flow circuit 07 - low input. can anyone help? what should i do?
also when i put the car into drive the car makes a sudden jump.(but it doesnt do this when i put it into reverse) i can also feel a jump when it shifts down gears as i slow down, could this be from the same problem?

Franco2112
06-11-2009, 03:31 PM
http://wiki.ross-tech.com/index.php/16486/P0102/000258

Silverstone-Cold
02-05-2010, 04:29 AM
If you ever think you have a bad MAF but arent sure, you could simply disconnect it from the ECU. The ECU will revert to a default program and if the car runs better, you have found your problem. (MAF)

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