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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 02-02-2010, 03:21 PM   #21
e4sixxx
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i cleared the codes after doing this mod, the mod cleared the post cat codes, but i am still throwing pre cat codes.
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Old 02-02-2010, 04:51 PM   #22
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Quote:
Originally Posted by e4sixxx View Post
i cleared the codes after doing this mod, the mod cleared the post cat codes, but i am still throwing pre cat codes.
pre cat codes, have to be bad 02 sensors. have you swapped those? also check the wires, possibly got dammaged in the swap?
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Old 03-18-2010, 01:10 PM   #23
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So i finally did this, and accoding to my computer my o2 sensors are in order but the car randomly throws these codes under acceleration. any help?

p0173, p0170, p1189, p1188
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Old 04-21-2010, 12:19 AM   #24
e4sixxx
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Originally Posted by mvrk10256 View Post
So i finally did this, and accoding to my computer my o2 sensors are in order but the car randomly throws these codes under acceleration. any help?

p0173, p0170, p1189, p1188
what codes do those codes translate to according to the peak tool?
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Old 05-12-2010, 07:18 PM   #25
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These codes seem to indicate a lean mixture. I would check for any vacuum leaks, or other air intake leaks. Start looking for things you may have caused in the areas where you were working (broken crankcase vent valve hoses, etc.), but also check common vacuum leaks like the intake air boot. These codes may not be related to the o2 sensor mod as the rear o2 sensors have no effect on fuel mixtures. Just my 2 cents.
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Old 05-27-2010, 11:02 AM   #26
powerstrokenstang
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anyone know which wire is for the sensor signal and which one is sensor ground. i got the o2 sims and need to wire them up.
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