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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (4 Of 4)) >> DTC/Circuit Diagnosis >> P2251 A/F Sensor >> DTC Description >> PR25DD engine >> DTC Detection Logic

DTC Detection Logic

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DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P2251

00

O2 sensor bank 1 sensor 1

(O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1)

Diagnosis condition

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Signal (terminal)

A/F sensor 1 signal

Threshold

The output voltage computed by ECM according to the A/F sensor 1 signal is constant.

Diagnosis delay time

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