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The check engine comes on. the van has had a full service done

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  1. O2 sensor (part of the emissions system, monitoring and helping adjust the air-fuel mixture)
  2. Loose gas cap
  3. Catalytic converter
  4. Mass air flow sensor (monitoring the amount of air mixed in the fuel injection system)
  5. Spark plug wires
1,2 and 4 are your most likely causes as they are more likely to occur even after a service. visit this site browse through it and weep: Introducing CarMD Mobile Take CarMD wherever you go
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Posted on May 02, 2017

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During the full service they should reset any trouble codes. you can also do it by disconnecting the battery for 30 min, reconnect and recheck. otherwise refer to service manual, may be a millage related emissions flag for service.

Posted on May 02, 2017


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