Nissan Rogue (T33) 2021-Present Service Manual: P0238 Tc Boost Sensor

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P0238 Tc Boost Sensor

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0238 00

TC BOOST SEN/CIRC-B1

(Turbocharger/Supercharger Boost Sensor A Circuit High) 		Diagnosis condition —
Signal (terminal) —
Threshold An excessively high voltage from the turbocharger boost sensor is sent to ECM.
Diagnosis delay time 5 consecutive seconds

POSSIBLE CAUSE

  • Harness or connectors

    (Turbocharger boost sensor circuit is open or shorted.)

  • Turbocharger boost sensor

  • Sensor power supply 1 circuit

FAIL-SAFE

Fail safe mode Nissan Ariya Vehicle behavior
Traveling control mode Engine output control

ECM reduces the engine output, according to the rise in engine speed. This reduces the Nissan Ariya vehicle speed to encourage the driver to repair malfunction.

  • Driving at 70 km/h (44 MPH) or more is possible.

NOTE:

This value is a reference value converted from engine power to Nissan Ariya vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition.
Device fix mode

  • This mode fixes the electric IVT control actuator and the EVT control solenoid valve in the reference position.

  • A control signals is not transmitted to the EGR volume control valve and the EGR volume control is deactivated.

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.

  2. Turn ignition switch ON.

  3. Turn ignition switch OFF and wait at least 10 seconds.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 5 seconds.

  2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK TURBOCHARGER BOOST SENSOR POWER SUPPLY

  1. Disconnect turbocharger boost sensor harness connector.

  2. Turn ignition switch ON.

  3. Check the voltage between turbocharger boost sensor harness connector and ground.

    + −

    Voltage

    (Approx.)
    Turbocharger boost sensor
    Connector Terminal
    F94 1 Ground 5 V

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK SENSOR POWER SUPPLY 2 CIRCUIT

Refer to DTC Diagnosis Procedure.

Is inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace error-detected parts.

CHECK TURBOCHARGER BOOST SENSOR GROUND CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.

    Turbocharger boost sensor ECM Continuity
    Connector Terminal Connector Terminal
    F94 3 F71 107 Existed

  4. Also check harness for short to power.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace error-detected parts.

CHECK TURBOCHARGER BOOST SENSOR INPUT SIGNAL CIRCUIT

  1. Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.

    Turbocharger boost sensor ECM Continuity
    Connector Terminal Connector Terminal
    F94 2 F71 81 Existed

  2. Also check harness for short to ground and to power.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace error-detected parts.

CHECK TURBOCHARGER BOOST SENSOR

Check the turbocharger boost sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

Replace turbocharger boost sensor. Refer to Exploded View.

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