CEL

2001 BMW 530

Tiny

carcrazy5series

March, 10, 2010 AT 2:54 PM

Engine Performance problem
2001 BMW 530 6 cyl Two Wheel Drive Automatic 77,000 miles

dealer says I need air flow sensor has codes p0174 -p1620 car runs fine

FOUND 17085 RELATED QUESTIONS

4 Answers

Tiny

Dr. Hagerty

March, 10, 2010 AT 11:03 PM

I want to ask what you need from our site, it seems you have made a statement, is there anything else?

Tiny

carcrazy5series

March, 11, 2010 AT 7:45 AM

Seems illogical the code indicates half the engine is malfunctioning and a maf would effect all the engine

Tiny

Dr. Hagerty

March, 11, 2010 AT 10:17 AM

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.

Tiny

carcrazy5series

March, 12, 2010 AT 3:14 PM

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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