DTC U2195 Ford
HO2S Heater Control Circuit (Bank 1, Sensor 2)
HO2S Heater Control Circuit (Bank 1, Sensor 2)
Description
The powertrain control module (PCM) monitors the heater in the heated oxygen sensor (HO2S) for correct operation. The PCM controls the heater on and off duty cycle to maintain a calibrated temperature. The test fails when the sensor does not warm up to the required temperature in a calibrated amount of time. The test also fails when the PCM is not able to maintain the required temperature after the sensor is warm.
Cause and Solution
VPWR circuit openHO2S heater circuit openHO2S heater circuit short in the harnessIncorrect connectionsDamaged or corroded terminalsExhaust temperature significantly higher than expectedDamaged HO2S
Diagnosis:
Inspect the connectors for signs of damage, water ingress, or corrosion.
Video Guide
Diagnostic Info
- DTC Code: U2195
- Brand: Ford