P0055

P0055 HO2S Heater Resistance ( Bank 1 Sensor 3 )

Description
Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit.

Possible Causes
VPWR circuit open
HO2S heater circuit open
HO2S heater circuit short in the harness
Damaged HO2S heater

Diagnostic Aids
Inspect the connectors for signs of damage water ingress or corrosion.