DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0052

A/F SEN1 HTR (B2)

(HO2S heater control circuit high bank 2 sensor 1)

Diagnosis condition

Engine running at idle

Signal (terminal)

A/F sensor 1 heater (bank 2) signal

Threshold

The current amperage in the A/F sensor 1 heater circuit is out of the normal range.

(An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.)

Diagnosis delay time

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