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Resetting non-continuous monitors to pass emission test 850

posted by  JimP on  Mon Mar 28 10:12 CST 2005
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I have the instructions from Volvo to run this reset process. I have tried to do the routine several times, but with no success.

Is their someone who can tell me what unwritten conditions need to be met? For example: Can the air cond be on during the drive portion? (must be off during idle) Can you run in 1st or second gear for the test to meet the RPM and time requirements (automatic)? Do all the series of tests have to be run at once?

I have attempted to check the F ADAP (my OBD-II reader can't see that) and have run that sequence. I always check engine temp at start to make sure it is in the correct start range.

Help! I replaced the two O2 sensors to pass the emission test and now can't get the monitors to reset.

Any help is appreciated.

Jim







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    Resetting non-continuous monitors to pass emission test 850

    posted by  Rule 308 on  Mon Mar 28 11:31 CST 2005
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    last visit: Tue May 8 09:20 CST 2012
    [RELATED]

    One thing that you can try is to leave the key on with a battery charger hooked up and a fan blowing on the engine to cool it down. I do not know what year model you have but some of the very early 850's would clear the monitors when you shut the car off. So, if you leave the key on and cool it down enought to get it back into the proper range to start the drive cycle it will retain the information from the previous cycle. I hate doing drive cycles on the early 850, the factory pays you 3 hours warrantee time and I have had customers that drove their car for weeks without resetting the monitors. I know, I am a regular ray of sunshine. Good Luck

    Mark







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