11-02-2018, 03:11 PM
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Member
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Join Date: Jun 2014
Location: SA, TX
Posts: 6,474
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Quote:
Originally Posted by andrewwynn
My O2 heater didn't work until I unplugged both post cat, started the car got new error, plugged both back in and started the car without clearing codes. The pending code for no O2 never tripped the SES and no more errors since
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This did not work for me unfortunately. Just tried it. Still getting p0058/2C9F for post cat bank 2 o2 sensor heating circuit. I verified 12v on the heater circuit at the o2 harness plug so I'm guessing it's just a bad o2 sensor and not a problem on the body side or the 30A fuse by the IVM (that should trigger both post cat heater errors).
Both post cats are new Bosch units of the splice in variety. Bank 1 has been fine since install, and bank 2 has been giving me issues since install. I've re-spliced bank 2 once already to verify it was not a continuity/resistance issue with the splices. Guess I'm going to just suck it up and order an application specific version this time. 
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
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2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)
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