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Engine MIL on

Tiny
ASHUULU SIMEON
  • MEMBER
  • 2012 MERCEDES BENZ C180
  • 1.8L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
Outside temperature sensor already been replaced. Obd fault code P0073 still stored (ambient temperature sensor has a short circuit to battery). Could this be the wiring of connectors from the battery?
Sunday, June 17th, 2018 AT 6:11 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,959 POSTS
Yes, it sounds like you have an open connection between the sensor and the PCM. Here is a guide that will help you check the connections just check the wire color the sensor so you know which ones to test.

https://www.2carpros.com/articles/how-to-check-wiring

Please run down this guide and report back.

Cheers, Ken
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Monday, June 18th, 2018 AT 12:24 PM

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