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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> Engine Performance >> System >> 3.6L - DTCS P2245 To U1431 >> Diagnosis and Testing >> P2271-O2 Sensor 1/2 Signal Stuck Rich >> When Monitored:

When Monitored:

With the engine running, vehicle speed above 96 kph (60 mph), throttle open for a minimum of 120 seconds, ECT greater than 70°C (158°F), catalytic converter temperature greater than 600°C (1112°F) and downstream Oxygen Sensor in a rich state. During a decel fuel shutoff event, the downstream Oxygen Sensor should switch from rich to lean within a specific time.

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