Circuit Description
WARNING: This page is about a different car, the 2000 Isuzu Hombre. However, it is still accessible from the selected car via links, so may be relevant.
The Heated Oxygen Sensor 2 (HO2S 2), located downstream from catalytic converter, produces an output signal relative to oxygen storage capacity of catalytic converter. HO2S 2 signal is less active than signal produced by front oxygen sensor.
Conditions for setting this DTC are:
- DTCs P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0171, P0200, P0300, P0301, P0302, P0303, P0304, P0341, P0404, P0506, P0507, P0601 and P0602 not set.
- Engine coolant temperature is greater than 104°F (40°C).
- Air flow is greater than 5.5 grams per second.
- TP sensor angle is 4-56 percent.
- HO2S 2 voltage is 425-460 mV for greater than 125 seconds.