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2001 BMW 530 cel

Tiny
CARCRAZY5SERIES
  • MEMBER
  • 2001 BMW 530
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 77,000 MILES
Dealer says I need air flow sensor has codes p0174 -p1620 car runs fine
Wednesday, March 10th, 2010 AT 2:54 PM

4 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
I want to ask what you need from our site, it seems you have made a statement, is there anything else?
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Wednesday, March 10th, 2010 AT 11:03 PM
Tiny
CARCRAZY5SERIES
  • MEMBER
  • 4 POSTS
Seems illogical the code indicates half the engine is malfunctioning and a maf would effect all the engine
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Thursday, March 11th, 2010 AT 7:45 AM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
The OBDII P codes are sometimes misleading. When dealing with BMW, I usually like to see the manufacturers faults which are in hexadecimal. The P codes can certainly be interpreted to indicate the air mass is at risk and to satisfy my curious nature, I would like to know what the air mass is showing when at idle, it might help guide the diagnostic process.
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Thursday, March 11th, 2010 AT 10:17 AM
Tiny
CARCRAZY5SERIES
  • MEMBER
  • 4 POSTS
The fuel trims are somewhat even but slightly elavated 7% b1 9%b2 the cel will only occur during long 65-70mph cruise of nearly an hr. Can't find vac leak but still think it is one
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Friday, March 12th, 2010 AT 3:14 PM

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