Check engine light

Tiny
GREG SMART
  • MEMBER
  • 2004 MERCEDES BENZ ML350
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 60,000 MILES
After being in storage for five months and driving for two days the check engine light came on, it is not flashing and vehicle is running fine.
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Sunday, October 1st, 2017 AT 11:43 AM

1 Reply

Tiny
CARADIODOC
  • EXPERT
The engine computer detected a problem and set a diagnostic fault code. Since this problem could adversely affect emissions, it also turned on the check engine light. The place to start is by having the fault codes read and recorded. The people at many auto parts stores will do that for you for free.

Be aware fault codes never say to replace parts or that one is bad. They only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. When a part is referenced in a fault code, it is actually the cause of that code about half of the time. First we have to rule out wiring and connector terminal problems, and things like that, before spending money on a part.
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Sunday, October 1st, 2017 AT 6:51 PM

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