error code 17536 P1128
 

Hello,

I have an error code keep coming up of 17536 P1128 LONG TERM FULE TRIM - SYSTEM TOO LEAN BANK 1.

car is a 1,8T 2000MY avant with engine AWT.

I have replaced 3 of the vaccum hoses so far as they seemed very dry but engine light keeps coming on after about 50 miles of driving. Also sometimes when idling the revs with drop badly for a second then come back up ?

anybody got any ideas of what i need to look for ?

thanks
neil

Generally replace all the vacuum hoses....looks like a vacuum leak. Check the intake tract hoses, vacuum leaks will cause lean run.

A leak on the pressure side of the turbo will generally cause mass air flow sensor to think more air is delivered to engine than really is being delivered so the ecm will meter more fuel until the 02 sensor trims the fuel...unless the leak also leaks under closed throttle. So you generally have to check everything.

A smoke tester works as well but they're expensive. Dealers and indys often have them.

I had a problem with my 4.2A6 and a new intake manifold that still had a lean misfire condition...turns out a new OEM O-ring was leaking...the tech fitted a new slightly thicker O-ring that solved the problem. Only way to find the leaking O-ring was the smoke machine.

took my MAF out to clean it and there was no sensor wire to clean, is this correct ?

thanks
neil

Hello,

I did not know where to post it so I decided to write it here.

Friend of mine has Audi a4 1.8 t quattro 125 kw 170 km AWM

Error code: 17536 - BANK1 MULTIPLICATIVE MIXTURE ADAPTATION

I guess it refers to turbo or it is something going on with these vacuum hose ? I am not a machinist but he says that probably one of the "conductors" which goes to turbo is blowing the whole thing up.
But there so many of them that none of the machinists want to deal with that.
Sorry for my bad English, any ideas?

If it's a heated wire Mass Air Flow sensor and there is no wire, the sensor is toast. Look carefully; it's a fine wire.

So the best way is to buy a new one or it is somehow fixable?
Thanks for your reply.

broken Pt wire in MAF not fixable...about all you can do is get a rebuilt one, dunno if there's a core charge with your old one.

Try shokan.com and get a used one for your exact year and model.

'conductor' probably refers to one of the many vacuum hoses. Get busy and replace them all. Cheap initial fix/maintenance.

Will do. Thanks John for your replies. I appreciate that.

thanks for the replies,

ended up being the MAF sensor.