i have a 1999 audi 1.8T the engine light went on. I have a VAG(cheap one) and the code came up with
17544 02/02 can someone shed some light on what this mean? thanks- posted
17 years ago
i have a 1999 audi 1.8T the engine light went on. I have a VAG(cheap one) and the code came up with
17544 02/02 can someone shed some light on what this mean? thanks
SAE P1136 VAG 17544 MIL: 2 Dcy
Long Term Fuel Trim Add. Fuel, Bank1 System too Lean.
Check intake air system for leaks ("false air") Check HO2S -G39- and O2S control Check Mass Air Flow (MAF) Sensor -G70- Check fuel pressure regulator and residual fuel pressure Check fuel injectors; Output Diagnostic Test Mode (DTM)
If you can't find any air leaks, and you're on your original MAF, check the adaptation values for the MAF and look for adaptation outside of allowed range. MAF failures are not uncommon...
Cheers
/daytripper '00 s4 6spd
Look at this image:
/daytripper '00 s4 6spd
fwiw, I put a close-up diagram of the MAF location here:
You'll need to remove the air cleaner housing to extract the MAF. This means you'll likely have to disconnect the above four items and pull the hoses off the housing to remove it.
/daytripper '00 s4 6spd
By "tool" I am referring to the diagnostic scan tool. I use VAG-COM, a mainline dealer uses the official Audi/VW tool (1551, 1552, and others). These tools are capable of performing adaptation cycles, coding units to vehicles, clearing DTCs, setting readiness bits, etc, as well as diagnosing problems.
The actual source of this particular problem can very likely be determined with proper use of a capable scan tool. I flagged the MAF because they do fail, more frequently than the other items on the potential list of indictees. But I wouldn't simply replace it, because the problem may well not be the MAF.
I would let a qualified mainline service department work on this one...
/daytripper '00 s4 6spd
from your previous diagnostic maybe i should just take it to a mechanic just to make sure it's more than the MAF is the problem. i know its going to cost me more money but i have no way of checking if there's any air leaks..etc
/daytripper '00 s4 6spd
I had a 17544 code and a bad, fluctuating idle. Mine was caused by a clogged "PCV" valve due to sludge. $17 part fixed it. It was causing an internal leak (crankcase gasses into intake manifold). picture here:
Also to check for vacuum leaks I had read online that you can remove the big hose that goes into the air cleaner housing and blow into it. I have no idea whether that really works. When I blew into it, it took about 10 seconds for the pressure equalize (hissing of escaping air to stop). (I didn't have an external vacuum leak.)
--Art
well got the car back and yes there was a leak.
80.00 for the test 80.00 to replace the host and of course + taxes......MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.