Conditions for Running the DTCs

WARNING: This page is about a different variant/trim than selected.

Before the ECM can report DTC P2271 failed, DTCs P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P0443, P0458, and P0459 must run and pass.
DTCs P0442, P0455, P0496, P0560, P0562, and P0563 are not set.
The engine is operating.
The rear heated oxygen sensor is at operating temperature for greater than 10 seconds.
The HO2S 2 is in closed loop.
The HO2S 2 heating is stable for greater than 10 seconds.
The HO2S 2 is greater than a calculated temperature for at least 30 seconds.
The calculated exhaust temperature is greater than 350°C (662°F).
The mass air flow (MAF) sensor is between 8-33 g/s for greater than 3 seconds during the intrusive test.
The measured airflow is greater than 15 g during the decel fuel cut-off test.
DTC P2271 runs continuously once the above conditions are met.