familytruckster

After my 60K maint (1K miles and 1 month ago) My CEL light comes on about once a week. ~4 times now.
The first ~3 times it showed
0441 EVAP Emission control system incorrect purge flow
(friend of mine has a generic car computer) so each time we reset the ecu and car ran great for a week then the CEL light comes back on.
On the 4th time the light came on, I reread through forum on how to reset ECU by disconnecting the battery for 5 min. Then did throttle body adjustment for 3 MIN after reconnecting bat etc etc.
Car ran great...I could tell the difference. It used to idle rough on cold starts. Ran like a champ. Well Sunday Hot day here in Denver. CEL came on again. Car ran crappy. Scanned again with generic computer not vag-com and got 2 codes
0441 EVAP Emission control system incorrect purge flow
and
1136 (powertrain specific manufacturer code)
reset ECU and no code for past week.

Now it is colder in Denver again and car runs great again. I Think I have funky sensor somewhere.

So here are my questions.
Ideas on what 1136 is on 1.8T? After searching this is either Radiator fan circuit OR something with MAF sensor.

Anybody else know whats going on? (prolly take into the shop next time it happens)




2000 Avant 1.8t QMCSWX 61K miles

JAFO

long term fuel trim too lean. i suggest fuel system cleaner as a first step.<ul><li><a href="http://www.bentleypublishers.com/tech/audi/dtc.table.htm">http://www.bentleypublishers.com/tech/audi/dtc.table.htm</a</li></ul>

Fxhomie

P0136 O2 Sensor Circuit - Malfunction (Bank 1 Sensor 2) A

Fxhomie

damn.. wrong code...

JJO311

<center><img src="http://pictureposter.audiworld.com/53343/105-0506_img.jpg"></center><p>P1136 (audi code 17544) is caused by one of 3 things. You can take it to a dealer and they will verify these. The first and most likely is you hav a vacuum leak. I have 58000 on my A4 1.8TQ and I've replaced both of the braided lines coming from the intake. See my pic to know what they look like (just recently the one to the pressure regulator). There are two of them coming off the intake manifold. Had teh front one replaced with OEM hose. Replaced the rear one (in pic) myself with 5/32 autozone vacuum hose which cost 72 cents. Both of mine were cracking and falling apart. If these are ok on your car then the problem is either your O2 sensors, or your MAF. Unfortunately those are going to cost a bit more to replace. I know you other people on here have replaced O2 sensors by themselves. Not too sure about the MAF. Hope you get it fixed. Good luck with it.