DTC P1127: Exhaust Temperature Out Of Range, O2 Sensor Tests Not Completed

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DTC P1127: EXHAUST TEMPERATURE OUT OF RANGE, O2 SENSOR TESTS NOT COMPLETED

Description:	The heated oxygen sensor (HO2S) monitor uses an exhaust temperature model to determine when the HO2S heaters are cycled ON. This DTC sets when the inferred exhaust temperature is below a minimum calibrated value.
Possible Causes:	Engine not operating long enough prior to carrying out the key ON, engine running (KOER) self-test Exhaust system too cool
Diagnostic Aids:	Monitor the HO2S heater PIDs to determine the ON or OFF state. DTC P1127 is present if the exhaust is not hot.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
Fiesta, Transit Connect	GO to PINPOINT TEST DW .
All others	GO to PINPOINT TEST DZ .