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Nissan Sentra B18 (2020-2025) Service Manual: P0196 Eot Sensor

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0196

EOT SENSOR

(Engine oil temperature sensor range/performance)

A

Diagnosis condition

—

Signal (terminal)

Engine oil temperature sensor signal

Threshold

Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from EOT sensor and intake air temperature sensor

Diagnosis delay time

—

B

Diagnosis condition

—

Signal (terminal)

Engine cold start

Threshold

The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, FTT sensor, and EOT sensor) shows that the signal voltage of the EOT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state

Diagnosis delay time

—

POSSIBLE CAUSE

Malfunction A

  • Harness or connectors (EOT sensor circuit is open or shorted.)

  • Engine oil temperature sensor

Malfunction B

  • Harness or connectors (High or low resistance in EOT sensor circuit)

  • Engine oil temperature sensor

FAIL-SAFE

Not applicable

Confirmation Procedure

Confirmation Procedure

  1. CHECK DTC PRIORITY

    If DTC P0196 is displayed with DTC P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or P0198.

    Is applicable DTC detected?

    YES >>

    Perform diagnosis of applicable. Refer to DTC Description.

    NO >>

    GO TO 2.

  2. INSPECTION START

    Is it necessary to erase permanent DTC?

    YES >>

    GO TO 7.

    NO >>

    GO TO 3.

  3. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

    >>

    GO TO 4.

  4. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-1

    1. Start engine and warm it up to normal operating temperature.

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

    3. Turn ignition switch ON.

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

    5. Start engine and let it idle for 5 minutes and 10 seconds.

    6. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES >>

    Proceed to DTC Diagnosis Procedure.

    NO >>

    GO TO 5.

  5. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-2

    With CONSULT

    1. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.

    2. Check that “COOLANT TEMP/S” indicates above 80°C (176°F).

      If it is above 80°C (176°F), go to the following steps.

      If it is below 80°C (176°F), warm engine up until “COOLANT TEMP/S” indicates more than 80°C (176°F). Then perform the following steps.

    3. Turn ignition switch OFF and soak the Nissan Sentra vehicle in a cool place.

    4. Turn ignition switch ON.

      Note:

      Do not turn ignition switch OFF until step 8.

    5. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.

    6. Check the following.

      COOLANT TEMP/S

      Below 40°C (104°F)

      INT/A TEMP SE

      Below 40°C (104°F)

      Difference between “COOLANT TEMP/S” and “INT/A TEMP SE”

      Within 6°C (11°F)

      If they are within the specified range, perform the following steps.

      If they are out of the specified range, soak the Nissan Sentra vehicle to meet the above conditions. Then perform the following steps.

      Note:

      • Do not turn ignition switch OFF.

      • If it is supposed to need a long period of time, do not deplete the battery.

    7. Start engine and let it idle for 5 minutes.

    8. Check 1st trip DTC.

    With GST

    Follow the procedure “With CONSULT” above.

    Is 1st trip DTC detected?

    YES >>

    Proceed to DTC Diagnosis Procedure.

    NO >>

    GO TO 6.

  6. PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B

    Note:

    Use the component function check to check the overall function of the EOT sensor circuit. During this check, a 1st trip DTC might not be confirmed.

    1. Turn ignition switch OFF.

    2. Disconnect EOT sensor harness connector.

    3. Remove EOT sensor. Refer to Exploded View.

    4. Check resistance between EOT sensor terminals by heating with hot water as shown in the figure.

      EOT sensor

      Condition

      Resistance

      Terminal

      1

      2

      Temperature [°C (°F)]

      20 (68)

      2.37 – 2.63 kΩ

      50 (122)

      0.68 – 1.00 kΩ

      90 (194)

      0.236 – 0.260 kΩ

    Is the inspection result normal?

    YES-1 >>

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

    YES-2 >>

    Confirmation after repair: INSPECTION END

    NO >>

    Proceed to DTC Diagnosis Procedure.

  7. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    TESTING CONDITION:

    • Before performing the following procedure, do not add fuel.

    • Before performing the following procedure, check that fuel level is between 1/4 and 4/4.

    • Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

    >>

    GO TO 8.

  8. PERFORM DTC CONFIRMATION PROCEDURE

    1. Move the Nissan Sentra vehicle to a cool place.

      Note:

      Cool the vehicle in an environment of ambient air temperature between −10°C (14°F) and 35°C (95°F).

    2. Turn ignition switch OFF and leave the Nissan Sentra vehicle for 12 hours.

      CAUTION:

      Never turn ignition switch ON during this procedure.

      Note:

      The Nissan Sentra vehicle must be cooled with the hood open.

    3. Start engine and let it idle for 5 minutes or more.

      CAUTION:

      Never turn ignition switch OFF during idling.

    4. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES >>

    Proceed 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

DTC Diagnosis Procedure

  1. CHECK DTC PRIORITY

    If DTC P0196 is displayed with DTC P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or P0198.

    Is applicable DTC detected?

    YES >>

    Perform diagnosis of applicable. Refer to DTC Description.

    NO >>

    GO TO 2.

  2. CHECK ENGINE OIL TEMPERATURE (EOT) SENSOR

    Refer to Component Inspection.

    Is the inspection result normal?

    YES >>

    INSPECTION END

    NO >>

    Replace EOT sensor. Refer to Exploded View.

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