Changed eng due to blown head gasket, now I keep getting check engine light.

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Darren Allred, Oct 27, 2021.

  1. Darren Allred

    Darren Allred New Member

    Joined:
    Oct 17, 2021
    2
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    0
    Location:
    Lexington, NC
    Vehicle:
    2013 Prius
    Model:
    Three
    This past April I had my head gasket blow on my 2013 prius gen 3. They put in new engine and said I'd probably need new Cat which was $1800. I had some eng codes come on and changed the MAF, MAP sensors, both O2 sensors, spark plugs & now my catalytic converter. I still can't get rid of 2 of the codes, P0172 & P219A codes. It runs rough if I hold gas to stay just above the ECO mark on my dash. The exhaust smells strong but not like sulfar but more rich. What else can I change that I haven't already? Should I try the injectors?
     
  2. AmazingFacts

    AmazingFacts Junior Member

    Joined:
    Aug 6, 2021
    54
    36
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    Location:
    San Jose
    Vehicle:
    2013 Prius
    Model:
    II
    I recently cleaned the intake manifold on my 2013 and forgot to put back on the small rubber orange o-ring between the EGR pipe & intake manifold, and I got a CEL for MAF sensor, etc. The car idled very rough and got a MAF CEL code. Issue was fixed after putting back in the o-ring. You may want to check the o-ring and listen for air leak hissing while engine is running.
     
    #2 AmazingFacts, Nov 4, 2021
    Last edited: Nov 4, 2021
    SFO likes this.
  3. Darren Allred

    Darren Allred New Member

    Joined:
    Oct 17, 2021
    2
    0
    0
    Location:
    Lexington, NC
    Vehicle:
    2013 Prius
    Model:
    Three
    I have changed the large gasket and the small Oring is there and didn't see anything wrong with it. I usually get the 219a code after driving about 30 miles. At speed it gets rough when I back off the gas
     
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