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Nissan Sentra B18 (2020-2025) Service Manual: P27a1-00 Electric Oil Pump

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P27A1

00

EL/AUX T/M FLUID PUMP A

(Electric/Auxiliary Transmission Fluid Pump "A" Stuck On)

Diagnosis condition

Diagnosis is permitted when all of the following conditions are satisfied:

a) Ignition voltage ≥ 9.01 V

b) Battery voltage ≥ 9.01 V

c) After ignition on, 1 sec has elapsed.

d) Target electric oil pump speed ≤ 0 rpm

Signal

—

Threshold

Electric oil pump speed > 250 rpm

Diagnosis delay time

2 seconds

POSSIBLE CAUSE

Electric oil pump

FAIL-SAFE

Stop/start system prohibited

DTC CONFIRMATION PROCEDURE

  1. PREPARATION BEFORE WORK

    If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 10 seconds, then perform the next test.

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is more than 10 V.

    >>

    GO TO 2.

  2. CHECK DTC DETECTION

    1. Ignition switch ON.

    2. Check the DTC.

    Is "P27A1-00" detected?

    YES >>

    Proceed to Diagnosis Procedure.

    NO-1>>

    To check malfunction symptom before repair: Refer to Intermittent Incident.

    NO-2>>

    Confirmation after repair: INSPECTION END

Diagnosis Procedure

Diagnosis Procedure

  1. REPLACE ELECTRIC OIL PUMP

    Replace electric oil pump. Refer to Removal and Installation.

    >>

    WORK END

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