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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2606 (Engine Controls - Powertrain DTC Charts And Descriptions (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P1127: Exhaust Temperature Out Of Range, O2 Sensor Tests Not Completed

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

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
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. The test fails 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 below normal operating temperature
Diagnostic Aids:  Monitor the HO2S heater parameter identification (PIDs) to determine their ON/OFF state. DTC P1127 is present if the exhaust is below normal operating temperature.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DZ .
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