2007 S40 2.4 won’t pass emissions- help
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Junior Member
Joined: Mar 2023
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I always go up one menu level, and then back to readiness check on my own OBD reader, just to make sure that I'm not looking at "old data". I've never had an issue disconnecting the OBD reader without turning the engine off, though I guess I probably do it that way just because it would be the normal sequence (do whatever I'm doing with the OBD reader, shut the engine off and unplug and store the OBD reader).
Junior Member
Joined: Sep 2020
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From: New York
Was there any resolution to this?
I have a 2005 S40 that also is not passing emissions.
It's as if the computer is not remembering the data, all the monitors are always incomplete.
Does anyone know the module that stores the drive cycle data? Is it the CEM, the ECM or what?
I have a 2005 S40 that also is not passing emissions.
It's as if the computer is not remembering the data, all the monitors are always incomplete.
Does anyone know the module that stores the drive cycle data? Is it the CEM, the ECM or what?
Senior Member
Joined: Feb 2013
Posts: 1,372
Likes: 111
From: Mesa, AZ
Just to make sure - you haven't just reset any codes, right? Doing so resets all the readiness indicators to "not ready". If they are persistently showing that they're all "not ready", I have to think something is seriously wrong. ;-)
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