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No check engine light

Tiny
JEANNETTE RITTER
  • MEMBER
  • 2005 NISSAN MAXIMA
  • 3.5L
  • 6 CYL
  • 199,000 MILES
The fail safe mode (limp mode) I have replaced the following; valve covers and gaskets (found oil in spark plug chamber #5), all of the plugs. I have cleaned the MAF, the TBS. Relearned the idle and it is still in limp mode.

Monday, April 25th, 2016 AT 1:54 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Hello,

Yes, limp mode means the computer never closes loop. A common problems for this is the thermostat is stuck open and the engine never gets up to operating temperature.

Here is a guide with more scenarios

https://www.2carpros.com/articles/scan-test-is-incomplete-p1000

Please let me know what you find

Best, Ken

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Monday, April 25th, 2016 AT 2:41 PM

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