Catera V6-3.0L VIN R (1997)
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DTC P0161 - HO2S Heater Circuit - Bank 2 Sensor 2 See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures/P Code Charts/P0161
HO2S Response Time
The ECM also has the ability to evaluate HO2S response time and whether or not there is sufficient signal activity. If a problem is detected, the ECM
will store a DTC indicating degraded HO2S performance.