2013 caravan p0420

Discussion in 'Chrysler' started by TheStepChild, Apr 15, 2017.

  1. GF got a newer van about a month ago. She had an 05 T&C. Bought a 2013 Dodge Grand Caravan with 118 on it. Spent a whole day shopping different dealers and decided to go with the first one we looked at. It is super clean compared to every other one we looked at. Kind of a base model, no power opening doors, slider doors don't go down, back vent windows are manual. Does have the stow and go which she wanted.

    Need some help on it. Past couple of weeks we've been getting a random p0420 catalyst system efficiency below threshold bank 1.

    Where do I start? Haven't seen anything too helpful in online searches
    Replace o2 sensor bank 1 sensor 2?
    I can see sensor voltage with torque app, but the voltages bounce around so much it's hard to say.

    Attached Files:

    BillLin likes this.
  2. MaxxMPG

    MaxxMPG Hasta Lavista AAA-Vee Von't Be Bach

    P0420 is catalyst efficiency. I have seen people use a thermal gun to read temperature pre and post cat to see if the catalyst is getting hot. If there is no increase in temperature, it's not doing its job.
    BillLin likes this.
  3. Thanks I've got a temp gun at work I can borrow. Torque app would let me read temp on o2 sensors bank 1 & 2 sensors 1, but not sensor 2
    BillLin likes this.

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