DTC Detection Logic

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0057

HO2S2 HTR (B2)

[Heated oxygen sensor 2 heater (bank 2) control circuit low]

• The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range.

  (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)

• ECM detects the heated oxygen sensor 2 heater circuit is short to ground.

• Harness or connectors

  (The heated oxygen sensor 2 heater circuit is open or shorted.)

• Heated oxygen sensor 2 heater