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Nissan Sentra B18 (2020-2025) Service Manual: P2766-00 Input Speed Sensor B

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P2766

00

Input/Turbine shaft speed sensor B

(Input/Turbine Shaft Speed Sensor "B" Circuit Range/Performance)

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) Range : D

d) Input speed > 842 rpm

e) Primary pulley speed > 842 rpm

Signal

Secondary speed sensor signal

Threshold

DTC is detected when one of the following conditions a) to b) are satisfied:

a) Current pulse frequency / Last pulse frequency ≥2

b) Current pulse frequency / Last pulse frequency ≤1/2

Diagnosis delay time

—

POSSIBLE CAUSE

  • Harness or connector

  • Secondary speed sensor (source reading input speed sensor value)

  • TCM

FAIL-SAFE

  • Lock-up is not performed

  • Stop/start system prohibited*

*: With stop/start system

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. PERFORM 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

      CAUTION:

      Be careful of the driving speed.

    3. Stop the Nissan Sentra vehicle.

    4. Check the DTC.

    Is DTC 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. CHECK SECONDARY SPEED SENSOR CIRCUIT

    Check secondary speed sensor circuit. Refer to Diagnosis Procedure.

    >>

    INSPECTION END

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