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MIL light on decel intermittent

Posted: Thu Feb 19, 2009 11:16 am
by Dan_L
My MIL comes on during fuel cut on decel, the code is 02 sensor high/low voltage. Its a brand new 02 but tested it anyways and it checks out. None of the connectors are corroded and there is 0 resistance back to the terminal connector for the ecu. It dosent happen all the time either. Should i take it back to get re-tuned? It dosent seem to affect the operation at all either. The light comes on but A/F ratios are what they should be and so is the 02 input. any ideas?

Posted: Thu Feb 19, 2009 11:36 am
by Spunkster
You need to find out what version of software it was tuned with.

Posted: Mon Feb 23, 2009 1:55 pm
by Dan_L
It was written with rom v4 then converted to 3 for burning it. hope that helps

Posted: Mon Feb 23, 2009 2:06 pm
by Spunkster
If it was tuned with Romeditor 4 then you need to burn it as a Romeditor version 4 rom and not convert it and try to use it in the older Romeditor 3 software.