Mass air flow sensor

Tiny
FIX-FOR-INSPECTION
  • MEMBER
  • 1999 LINCOLN NAVIGATOR
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
Check engine light was on and the code was for mass airflow we sensor. I replaced it and disconnected battery to turn light off. Then drove over 70 miles. No lights came back on but was that enough driving to make sure the engine light will stay off and the code clear?
Thursday, November 21st, 2019 AT 3:53 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Depending on what the code was it may require the adaptives to learn again before it will set the code again. When you disconnect the battery it wipes all the memory in the modules and a lot of codes will not set until it relearns the vital data. This usually takes multiple drive cycles, meaning it needs to run up to operating temp and then go through a shift sequence multiple times in a row.

In short, this is probably not enough driving if it is one of these codes.
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Sunday, November 24th, 2019 AT 3:08 PM

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