Cadillac DTS Forum - 2006 through 2012 Discussion, p0300 2006 Cadillac DTS in Past Cadillac Vehicle Discussion; Hi Guys - I've got the same symptoms - 2006 DTS 1SE, 102K miles. P0107, P0174, P2119, P2431 and some ...
Hi Guys - I've got the same symptoms - 2006 DTS 1SE, 102K miles. P0107, P0174, P2119, P2431 and some others come and go, but never a P0300 or other misfire code. I've replaced the plugs, Bank 1 HO2S sensor, EGR valve, Secondary Air Check Valve, MAF and MAP sensors, and I still get occasional chugs, usually at low throttle, and stalls when stopped. My Innova 3160 shows the EGR Error always near 100% at closed or low throttle, but that's the only thing that seems out of whack. I'm out of ideas, but does this add anything to the discussion?
P0107... MAP sensor...
P0174... Lean... Look for a vacuum leak and check/tighten the intake bolts.
P2119... Throttle position error... might try cleaning the throttle body.
P2431... Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance
Automobile(s): 2005 CTS/ 2008 DTS/ 2008 STS V8 N* All White Diamond Pearl
Re: p0300 2006 Cadillac DTS
Originally Posted by phigment
Following this thread with interest. My 06 has 130k miles now. Starting around two weeks ago it would chug while in drive, at idle, with the brake applied(stop light). Its like two or more cylinders stopped getting gas for a split second. The car would cough for a second and then return to normal idle. Fuel pressure is good. Replaced all plugs and they all looked pretty good for 130k miles. No codes at all. All injectors have been checked and show good. Car is not running lean. Now my intake bolts were loose and I did tighten them awhile back. I need to get a can of carb cleaner and have at it while watching fuel trim. Is it possible that a slight intake leak could cause this? Its not consistent and that seems to make diagnosing it harder.
Did you ever solve this problem?
Originally Posted by bjm6887
egr, fine. replaced maf, and map sensor. still no better. uggh