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Old 04-02-2003, 02:46 PM
manny manny is offline
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Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
Most O2 sensors die a slow death. Think of it as a battery wearing out, i.e. voltage goes lower & lower.
As this begins to happen, the ECU will interpret this as having to add more fuel.
Once you reach the adaption limits, a CEL will come on.
I don't see why any 4-wire O2 should not work. Just match the wires correctly ( 1 signal wire, 1 power wire for the heater element, and 2 ground wires ).
You could also backprobe the signal wire & see what the voltage output is & how " lively " the sensor is.
These are generic suggestions applying to O2 sensors in principal.
2007 C 230 Sport.
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