Conditions for Running the DTC

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

Before the ECM can report DTC P2271 or P2273 failed, DTCs P0036, P0037, P0038, P0056, P0057, P0058, P137, P0138, P0140, P0141, P0157, P0158, P0160, P0161, P0342, P0343, P0367, P0368, P0366, P0443, P0451, P0452, P0453, P0458, and P0459 must run and pass.
The rear HO2S are at operating temperature for more than 10 seconds.
The fuel injectors are enabled.
The long term fuel control is enabled.
The mass air flow (MAF) sensor is between 6-33 g/s for the intrusive test.
The MAF sensor is more than 10 g/s.
DTC P2271 and P2273 runs continuously once the above conditions are met.