× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2003 BMW X5 4.4i 4.4L MIL Lamp on
Posted to European Driveability on 8/28/2008 3 Replies

So we have this X5 from a lot down the street, sets code p0491 every third or fourth cold start. I deal with secondary air problems on VW/Audi vehicles on a regular basis, and have only once come up with no problem but still setting the code. This X5 is the fi...

3 Replies Received (View Replies)

  Related Documents & Media  2003 BMW X5 4.4i

 
Message Closed w/FIX

car Vehicle Data

2003 BMW X5 4.4i

VIN 5UXFB33543
Engine4.4 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursNot Applicable

Trouble Codes

P0491AIR System Performance
Message Closed w/FIX

car Vehicle Data

2003 BMW X5 4.4i

VIN 5UXFB33543
Engine4.4 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursNot Applicable

Trouble Codes

P0491AIR System Performance