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2007 Chrysler Town & Country Question: Check engine light is on and I ran a quick diagnostic test. Code P0420 appears.

 

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drowell47, Greenwell Springs, LA, March 19, 2012, 03:53
 Rookie

The engine light will come and go. Does not stay on permanently.

Any ideas?

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  • Answer #1

    Greg's Orange Auto (14262 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 19, 2012, 06:43
     Master

    thats telling you your catalytic converer system is below threshold on bank 1. which means you o2 sensor after the cat is not seeing a diff between the one in frt of your cat. have it tested by your mech

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    drowell47, March 19, 2012, 07:11
     Rookie

    Thank you for the response. This will help me when the light comes back on.
    Dave in Greenwell Springs, LA

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