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Old 03-01-2012, 04:43 PM   #1
usa3990
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2006 Cadillac DTS 6 Engine Codes!

Hey all, I am new to this forum and I hope you guys can help me out. My 2006 cadillac dts had the service traction control/service stabilitrak light come on (a min later the service engine soon came on too). I checked all of the fuses and found a blown oxygen sensor fuse. I replaced that fuse and the service traction control/service stabilitrak light turned off. I checked the codes with a obd2 scanner and found six of them!!

p0412 Secondary Air Injection System Switching Valve A Circuit Malfunction
p0102 Mass Air Flow (MAF) Circuit Low Input
p0036 Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2
p0418 Secondary Air Injection (AIR) Pump Relay Control Circuit
p0480 LOW SPEED COOLING FAN RELAY CIRCUIT FAULT
p0481 Cooling Fan 2 Control Circuit Malfunction

About 3 weeks ago the same service traction control/service stabilitrak lights came on, in that case the pcm fuse was blown. I replaced it reset the codes and they just now returned.
At this point the only thing I can think of is a faulty pcm/ecu. The reason I think that is because that is the one thing these all have in common, they are all controlled by the pcm/ecu. What do you guys think? Do you have anything else for me to check. Thanks, Dustin.
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Old 03-02-2012, 09:19 AM   #2
GMCustomerService
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Re: 2006 Cadillac DTS 6 Engine Codes!

Good morning Dustin,
I realize it isn't always an option, but if you were to decide upon visiting a dealership to have this diagnosed, please let me know as I would like to be available to assist in any way that I can.
Regards,
Sarah
GM Customer Service
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