Question about 2004 GMC Canyon

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02 sensors I have a PO141 code and I have replaced both sensors with Bosch sensors but the codes is still there. Now I am hearing that Bosch sensors have had problems and I should use a GMC one. Is this true? Please I need help I am driving around with a rejuction sticker and I can't fix my problem WHAT am I going to do with a match an a can of gas.

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  • GMC Master
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As long as the light is still on the ecm thinks there is still a problem. did you turn of the light with a obd2 scanner. if not go to any auto parts store and they will turn light off for nothing. just tell them you just replaced both sensors. hope this helps!

Posted on May 09, 2010

  • carl May 09, 2010

    p0401 is egr flow insufficient, insufficient EGR flow -usually the egr valve gets carboned up and start clogging,actuator fails or valve sticks u can remove valve and clean carbon off valve and tube which usually fixes problem also can be a vacuum problem to egr valve test vacuum at valve.

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1 Answer

2006 Dodge Caravan Getting Two codes: Po135 and Po141


Sadly people don't know that trouble codes only tell the mechanic what to test, not what to replace. And auto parts stores are in the business of selling parts, not giving advice.
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