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#1
09-12-2010, 03:11 PM
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SES light on...again!
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#2
09-12-2010, 07:26 PM
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O2 sensor heater circuit, sounds like you need a new sensor. Bank 2 sensor 1 will be the drivers side pre-cat sensor.
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is 
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#3
09-13-2010, 06:07 PM
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Quote:
Valentin
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#4
09-13-2010, 07:11 PM
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I forgot to mention that two of pins in the plug (pic) should have power. I'm only getting power to one, on the other plug two of the four get power. Do you know what could be causing it to not have power?
Valentin
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#5
09-13-2010, 07:47 PM
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Ah, that info changes it all... I would say the 2 month old O2 sensor is not bad, but you will need to look up the wiring schematic for that circuit and see where the O2 sensor heater circuit is powered from, then go from there with wire checks and seeing what else you can check.
You can look at the schematics on a few sites online, the one I remember that is free is WDS BMW Wiring Diagram System - X5 E53 Note that you may need to download some drivers to view it, just expect it. Should be some SVG viewer.
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is
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#6
09-13-2010, 08:56 PM
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Quote:
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#7
09-13-2010, 09:29 PM
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Well, that is the DME, the engine computer... It may be worth paying the 1 hour diagnosis at the dealer to see if it could be anything else as the module costs around $1,200 plus programming.
Just tell them what you know, that being it is a new sensor and the heater wire isn't getting powered.
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is
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