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MAF sensor fault codes '08 Cayenne S

baldlemur

Well-known member
Joined
11 Jul 2014
Messages
74
Hello
Apparently, I have the following fault codes on my 957 Cayenne S 4.8:

P1080 - air mass ahead of throttle valve, partial load (no signal)
P1094 - air mass ahead of throttle valve - implausible (below lower limit value)
P1097 - Mass air flow ahead of throttle valve (MAF1) - implausible (below lower limit value)

Looks like a new MAF sensor is required? Are there 2 sensors on a 957 Cayenne S 4.8 petrol? Is it prudent to replace both at the same time?

I notice that on Design911 the Bosch ones are much cheaper (£170) than OE Porsche ones (£560). Are the Porsche ones worth the extra? Anyone know who makes the OE ones?

Also, from a quick look at youtube, changing the sensor looks like a DIY job...am i right? Would the codes have to be cleared at OPC after replacement of the sensor(s)?

Thanks in advance
John
 
V6 will have x1 maf sensor whilst a V8 will have two .. i would guess that MAF1 is bank 1 so left hand side facing the car from the front .

The fault codes do seem to indicate a maf sensor fault .. im dubious an air leak would cause those readings .

yes its a diy job .

i replace whats broken or is indicated as such then test , replacing both is not warranted atm.

I would prefer the fault codes to be cleared as that will reset the adaptations as well .

Be aware a maf fault code does not always indicate a MAF Sensor fault . .

I'm afraid i use porsche parts so can't comment on non OEM.
 
Thanks deMort. Helpful info as always!
 
UPDATE

Replacing the MAF sensor worked. All fault codes cleared. :)
 

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