200SX L4-1998cc 2.0L DOHC MFI (SR20DE) (1995)
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2) Set voltmeter probes between ECM terminal "46" (sensor signal) and "43" (engine ground).
3) Make sure of the following with engine speed held at 2,000 rpm constant under no load.
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Malfunction indicator lamp goes on more than 5 times within 10 seconds in Diagnostic Test Mode II (FRONT HEATED OXYGEN SENSOR
MONITOR).
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The maximum voltage is over 0.6 volts at least one time.
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The minimum voltage is below 0.35 volts at least one time.
Diagnostic Procedure