2001 BMW 540i 4.4L MIL Lamp on
I Know that there is a problem with these 2 specific codes.I have checked the Air Pump......Plenty of [...] is no carbon on the backside of the Check [...] vacuum hose to the valve is intact,and when I apply vacuum the Air pump changes pitch.....so the valve i...
Summary posted 2/26/2006
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Vehicle Data2001 BMW 540i
Trouble Codes
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Message Closed w/Summary
Vehicle Data
2001 BMW 540i
VIN | WBADN534X1 |
Engine | 4.4 L / 8 cyl / GAS |
Trans | 5-speed Automatic (Electronic) |
Delivery | FI / Multi Port |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
80 | Secondary Air System Bank 1 |
81 | Secondary Air System Bank 2 |