Conditions for Setting the DTC

(Condition 1)

• No CKP, CMP, MAF, oxygen sensor, EVAP purge solenoid, ECT, TP, fuel system, MAP, misfire faults exist.
• Ignition ON.
• Engine coolant temperature is greater than 75 °C (167 °F).
• Total mass air flow is greater than 400 g.
• HO2S2 voltage for lean is greater than 1.001 V.
• HO2S2 voltage for rich is greater than 0.620 V.

(Condition 2)

• No CKP, CMP, MAF, oxygen sensor, EVAP purge solenoid, ECT, TP, fuel system, MAP, misfire faults exist.
• Ignition ON.
• Engine coolant temperature is greater than 75 °C (167 °F).
• Total mass air flow is greater than 400 g.
• HO2S2 voltage for rich is less than 0.620 V.
• HO2S2 voltage for lean is less than 1.001 V.

(Condition 3)

• Ignition ON.
• Exhaust gas temperature is greater than 349.975 °C (662 °F).
• HO2S2 voltage is between 0.361 and 0.488 V.
• Internal resistance of HO2S2 is greater than 60 kΩ.