Conditions for Setting the DTC
P0137
The engine control module detects that the heated oxygen sensor voltage is less than 50 mV and the circuit is shorted to ground for greater than 50 s.
P0138
The engine control module detects that the heated oxygen sensor voltage is greater than 1, 050 mV and the circuit is shorted to voltage for greater than 13 s.
P013A
The engine control module detects that the accumulated mass air flow monitored during rich-to-lean transitions between 450 - 150 mV is greater than 36 grams.
P013B
The engine control module detects that the accumulated mass air flow monitored during lean-to-rich transitions between 300 - 600 mV is greater than 88 grams.
P013E
The engine control module detects an initial delayed response to a change from rich to lean such that the heated oxygen sensor voltage has not decreased to 450 mV within a calibrated value of accumulated air flow.
P013F
The engine control module detects an initial delayed response to a change from lean to rich such that the heated oxygen sensor voltage has not increased above 350 mV within a calibrated value of accumulated air flow.
P2270
The engine control module does not detect a heated oxygen sensor voltage greater than 825 mV before accumulated mass air flow exceeds a calibrated value.
P2271
The engine control module does not detect an heated oxygen sensor voltage less than 100 mV before accumulated mass air flow exceeds a calibrated value.