I recently got '01 Audi A6 4.2l. Had it for few days and CHECK ENGINE lightcame on I check it with vag-com and got following fault codes:

3 Faults Found:
17538 - Fuel Trim; Bank 2 (Mult): System too Lean
P1130 - 35-10 - - - Intermittent
17536 - Fuel Trim; Bank 1 (Mult): System too Lean
P1128 - 35-10 - - - Intermittent
17551 - Load Calculation Cross Check: Upper Limit Exceeded
P1143 - 35-10 - - - Intermittent
Readiness: 0000 0000

Can somebody please tell me are these codes serious, is there anything elseI can check withvag-com toll to be more accurate with diagnose,and what doI have to do in order to fix it?? As far as I know previous owner changed oxygen sensors, MAF and vacuum hoses.Where shouldI start?? Help me please!!

Thank you for any word of advice.

 

I can lend a hand on the first two codes. When I bought mine the same codes popped. Under warranty, the dealer changed my air filter, MAF sensor, O2 sensors, and replaced all the rotten vaccum line under the plastuc shroud. Heat is a killer in the engine bay and a rotted line will mess with you all day long. Car hasn't popped a CEL since. Great, reliable rig.

 

air/ vacuum leak I could post a picture to confirm this but no point

 

I'm total noob do u guys think i can check vacuum hoses by myself?? Thanks for previous posts

 

Dont see why not...Replace one at a time...They might break apart when taking them off due to being so brittle. Take the first one off and measure the length. Cut the new hose and install, Do one hose at a time. Can't be too hard...just assuming.

 

I will do the work on weekend, thanks for responds.

 

ohhh these engine codes are real tricky.. i had checked my chevy engine codes and the problem they were giving were quite different from the actual one and finally had to take the chevy to my dealer.