Chrysler
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    HO2S Slow Response Conditions
Cause:
    Engine runtime 2-3 minutes, ECT sensor input from 120-170°F, VSS at 0-20 mph for 2 minutes, then engine at idle in drive (A/T) or neutral (M/T), then the test started and the PCM detected that the rear HO2S-13 voltage did not switch from 270-620 mv enough times in a 1-second test period.

Generic
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    O2 Sensor Circuit Slow Response