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Nissan Sentra B18 (2020-2025) Service Manual: P27b5-00 Control Module

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P27B5

00

CONTROL MODULE

(Internal Control Module Transmission Gear Ratio Control Performance)

Diagnosis condition

When the ignition switch is ON

Signal

—

Threshold

Calculated required torque to increase > Calculated engine torque threshold

Diagnosis delay time

0.27 seconds

POSSIBLE CAUSE

TCM

FAIL-SAFE

Shock at step-shift

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. Start the engine.

    2. Drive the Nissan Sentra vehicle and maintain the following conditions for 10 seconds or more.

      Shift position

      : "D" position

      Nissan Sentra Vehicle speed

      : 40 km/h (25 MPH) or more

    3. Stop the Nissan Sentra vehicle.

    4. Check the DTC.

    Is "P27B5-00" 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 TCM

    Replace TCM. Refer to Removal and Installation.

    >>

    WORK END

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