TwinTurbo.NET: Nissan 300ZX forum - Cannot enter Mode II for O2 sensor monitoring.
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Subject Cannot enter Mode II for O2 sensor monitoring.
     
Posted by Goldchocobo on May 13, 2015 at 7:51 PM
  This message has been viewed 261 times.
     
     
Message Hello forum,

This is what I'm doing:

Start Z, go for a short drive to get up to operating temperature.

Turn Z off

Enter mode II with key in acc position

Codes blink 55

While still in mode II, I turn car over

After doing so, I get no blinking on the check engine light or the red ECU light. While the car is still running, I turn the pento for the second O2 sensor, and the ecu gives me two short blinks, then nothing.

Ideas? The search bar has completely failed me on this one.

     
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