Mdu - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
(Post Link) post #1 of 2 Old 07-10-14 Thread Starter
Status: -
Join Date: Feb 2009
Location: South Africa
County: Gauteng
Posts: 2

I am driving an Alfa 156 2.0 TS 1999 model , and have the following fault for the past 3 weeks:
The car stays on high idling even when stationary.
My Auto Eletrician tested with the Launch X431 and found the following codes:
0170 and 0100 , I would like to know the description for them , can somebody please help.
nzama_g is offline  
Sponsored Links
Status: Tin worm attack ... ARGHH!
AO Gold Member
gazza82's Avatar
Join Date: Jan 2003
Location: United Kingdom
County: Buckinghamshire
Posts: 8,288
Images: 12
You might not get the right codes using that system ... the pre-2000 156 didn't have a standard OBD system so needs MultiEcuScan really ... luckily that will read you codes in it's free to use mode if you also get a KKL VAG-COM interface cable.

But if they are being read correctly they are:

P0100: Mass or Volume Air Flow Circuit Malfunction ... replacement MAF required .. get a Bosch one!
P0170: Fuel Trim Malfunction (Bank 1) ... probably the lambda sensor ... again buy Bosch, NTK type doesn't work properly.

You may also have an air-leak ... mine was the oil separator valve behind the throttle body. The valve inside was missing and letting air in from the crankcase which meant my idle was 1200-1400 rather than 850 rpm. Check the "saga" behind this on my greenserpent website (link below)

cheers, Gary

HIS: 1998 156 2.0 TSpark with Sport Pack 2, sunroof and hi-level spoiler in Alfa Rosso. V6 intake mod, clear side repeaters and Zeatek undertray.

HERS: 2009 MiTo 1.4 95bhp Turismo arrived 21st November in Techno Grey with colour-coded headlight surrounds.

"If you're driving on the edge ... you're leaving too much room!"
My Alfa156 Web Site - how-to's, piccies, links, useful stuff, etc.
gazza82 is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT


Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome