Any Peake "code" experts want to decipher? - The Unofficial BMW M5 Messageboard (m5board.com)

vics · 5th January 2005, 20:14

OK guys; from the Peake tool & relative to the 3k'ish consistent stumbling, what do you think this points to (cam sensors & MAFs ?) - Positive note; nothing VANOS related seems to be in play here; - thanks!

Table 18:

49 "Air mass sensor plausibility" ( two faults in one week - same code returned )

AE "Air fuel adaption, Cyl # 1-4" ( two faults in one week - same code returned )

AF "Air fuel adaption, Cyl # 5-8"

D3 "Misfire during warmup. Cyl# 7

81 ? (nothing referenced)

A6 ? (nothing referenced)

BlueBomber · 5th January 2005, 20:32

Quote:

Originally Posted by vics

OK guys; from the Peake tool & relative to the 3k'ish consistent stumbling, what do you think this points to (cam sensors & MAFs ?) - Positive note; nothing VANOS related seems to be in play here; - thanks!

Table 18:

49 "Air mass sensor plausibility" ( two faults in one week - same code returned )

AE "Air fuel adaption, Cyl # 1-4" ( two faults in one week - same code returned )

AF "Air fuel adaption, Cyl # 5-8"

D3 "Misfire during warmup. Cyl# 7

81 ? (nothing referenced)

A6 ? (nothing referenced)

It reads like MAFS' to me. I'd try swapping your two MAFS' and see if any errors are isolated to only a single MAFS. Although in my experience, if one goes, the other is likely on its way out too...

louv · 6th January 2005, 07:55

Also consider the Pre-Cat O2 sensors might be gone. O2 sensors are cheaper, and only slightly harder to replace.

How many miles are on your car?

I've had to replace my O2 sensors about every 35,000 miles.

vics · 6th January 2005, 18:11

Quote:

Originally Posted by louv

Also consider the Pre-Cat O2 sensors might be gone. O2 sensors are cheaper, and only slightly harder to replace.

How many miles are on your car?

I've had to replace my O2 sensors about every 35,000 miles.

HI - 35,000 miles.
Might this also explain the ocassional foul smell I'm experiencing (rotten eggs like) ?- thanks - V

cali6869 · 6th January 2005, 19:00

I have the same 1st 3 errors... Im thinking is the maf sensors... probably will take the car to the dealer next week.

louv · 6th January 2005, 19:40

Foul Smell? No I don't think either the MAFS or O2 sensors cause foul smells. Maybe you have a squirrel caught in the intake.

Only 35k?!? Get Thee to a Dealer! Only we who are out of warranty should be Reading Tea Leaves & Peake Tools and swapping out our own parts!

BlueBomber · 6th January 2005, 20:32

Quote:

Originally Posted by louv

Foul Smell? No I don't think either the MAFS or O2 sensors cause foul smells.

Actually, when my MAFS' and CPS sensors were failing, I did have a foul smelling coming from the exhaust. I had attributed it to running too rich due to faulty sensors. As soon as I replaced the MAFS' and CPS, this foul smell went away.

louv · 6th January 2005, 20:51

Quote:

Originally Posted by BlueBomber

Actually, when my MAFS' and CPS sensors were failing, I did have a foul smelling coming from the exhaust. I had attributed it to running too rich due to faulty sensors. As soon as I replaced the MAFS' and CPS, this foul smell went away.

I stand corrected. (unless you had a squirrel in your MAF, too!)

BlueBomber · 6th January 2005, 22:37

Quote:

Originally Posted by louv

I stand corrected. (unless you had a squirrel in your MAF, too!)

I'll be honest. I didn't check for squirrels... but I suspect rats/mice would be more likely

vics · 6th January 2005, 23:16

Quote:

Originally Posted by BlueBomber

Actually, when my MAFS' and CPS sensors were failing, I did have a foul smelling coming from the exhaust. I had attributed it to running too rich due to faulty sensors. As soon as I replaced the MAFS' and CPS, this foul smell went away.

GREAT feedback - thanks !