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  1. Check Engine Light - P0171 Code

    4th. Generation Chrysler Minivans: 2001-2007
    2003 Caravan SE with 164,000 km on a 3.3 litre. What would be the most common causes for tripping a P0171 (system too lean) code? I haven't been able to locate any holes in the air intake system. Put in a new air filter while I had it apart and managed to clear the code with a friends Elm327...
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