p0404

  1. W

    P0404 After Replacing ERG Valve

    Hey Everyone - My neighbor had to have her 07 Liberty towed to a shop and they told her she needed a new EGR Valve and Spark plugs. She asked if it was something I could do for less and I agreed. Job was smooth. Then after driving for 20 minutes or so, she gets a P0404 EGR Position Sensor...
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