Quote:
Originally Posted by puretone
Dunno, I suppose going in "limp-mode" (honda-speak, eeewwww)
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People use the term "limp-mode" like it's "safe-mode" for a computer. The ecu's reaction is different for any given missing sensor. In the case of the o2, the reaction is 3-5mpg worse fuel economy. If it were a knock sensor, it would be permanently retarded timing. A missing coolant temp sensor results in rich running (depending on temp) and VERY hard starting below 60 degrees.
In the case of the o2 sensor, a little extra carbon would be the main ill effect over time. It won't run so rich that it affects lubrication. It might mess up a catalytic converter over time.