No check engine light

2005 NISSAN MAXIMA
199,000 MILES • 3.5L • 6 CYL
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JEANNETTE RITTER
  • MEMBER
  • 4 POSTS
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.

Apr 25, 2016 at 1:54 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
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

Apr 25, 2016 at 2:41 PM
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