P1127 2008 FORD FUSION - Exhaust Not Warm Enough Downstream O2 Sensor Not Tested
P1127 2008 Ford Fusion Possible Causes
- Faulty O2 Sensor Heaters
- O2 Sensor Heaters harness is open or shorted
- O2 Sensor Heaters circuit poor electrical connection
- Exhaust system too cool
P1127 2008 Ford Fusion Tech Notes
Downstream refers to Sensor 2 (see picture).
Cost of diagnosing the P1127 2008 Ford Fusion code
The cost of diagnosing the P1127 2008 Ford Fusion code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
P1127 2008 Ford Fusion Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1127 2008 Ford Fusion Meaning
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.