Nissan Sentra B18 (2020-2025) Service Manual: P0404 Egr Volume Control Valve
Dtc Description
DTC Description
DTC DETECTION LOGIC
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0404 |
EGR A CONTROL (EGR “A” Control Circuit Range/Performance) |
A |
Diagnosis condition |
— |
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Signal (terminal) |
EGR volume control valve |
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Threshold |
ECM detects that the current sent to the EGR volume control valve motor is equal to or more than the threshold value under the condition that the target angle of EGR volume control valve is constant. |
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Diagnosis delay time |
— |
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B |
Diagnosis condition |
— |
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Signal (terminal) |
EGR volume control valve |
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Threshold |
ECM detects that the difference between the target angle of EGR volume control valve and actual valve angle is equal to or more than the threshold value. |
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Diagnosis delay time |
— |
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POSSIBLE CAUSE
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EGR volume control valve
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Foreign matter caught in theEGR volume control valve
FAIL-SAFE
Engine Control System
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Engine operating condition in fail-safe mode |
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Fail safe mode |
Nissan Sentra Vehicle behavior |
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Traveling control mode |
Accelerator angle variation control |
ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction. Note:
ECM does not control the accelerator pedal releasing speed. |
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Engine output control 1 |
ECM reduces the engine output, according to the rise in engine speed. This reduces the Nissan Sentra 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 Sentra vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition. |
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Engine output control 2 |
ECM reduces the engine output, according to the rise in engine speed. This reduces the Nissan Sentra vehicle speed to encourage the driver to repair malfunction. Driving at 40 km/h (25 MPH) or more is possible. Note:
This value is a reference value converted from engine power to Nissan Sentra vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition. |
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Device fix mode |
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Combustion control mode |
Stratified charge combustion control at starting |
No stratified charge combustion at starting (cold start). |
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Idle speed control |
Stops feedback control of idle speed and controls with specified speed. |
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Recovery speed control at decelerating |
Stops recovery speed control by the fuel cut at decelerating and controls with specified speed. |
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Idle neutral control |
Stops idle neutral control. |
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Idle Start/Stop System
Not applicable
Confirmation Procedure
Confirmation Procedure
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CHECK DTC PRIORITY
If DTC P0404 is displayed with DTC P044A or P044E, first perform the confirmation procedure (trouble diagnosis) for DTC P044A or P044E.
Is applicable DTC detected?
YES >>Perform diagnosis of applicable.
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DTC P044A: Refer to DTC Description.
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DTC P044E: Refer to DTC Description.
GO TO 2.
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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.
>>GO TO 3.
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PERFORM DTC CONFIRMATION PROCEDURE
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Start the engine when the following conditions are met.
Intake air temperature
0°C (32°F) or more
Engine coolant temperature
75°C (167°F) or more
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Drive the Nissan Sentra vehicle at 50 km/h (32 MPH) or more for at least 5 seconds.
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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
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Dtc Diagnosis Procedure
DTC Diagnosis Procedure
-
CHECK DTC PRIORITY
If DTC P0404 is displayed with DTC P044A or P044E, first perform the confirmation procedure (trouble diagnosis) for DTC P044A or P044E.
Is applicable DTC detected?
YES >>Perform diagnosis of applicable.
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DTC P044A: Refer to DTC Description.
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DTC P044E: Refer to DTC Description.
GO TO 2.
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CHECK EGR VOLUME CONTROL VALVE
Check EGR volume control valve. Refer to Component Inspection.
Is the inspection result normal?
YES >>INSPECTION END
NO >>Repair or replace malfunctioning part.
Other materials:
C1711-7b Low Tire Pressure Fl
Dtc Description
DTC Description
Note:
The Signal Tech II Tool [– (NI-50190)] can be used
to perform the following functions: Refer to the Signal Tech II User
Guide for additional information.
Activate and display TPMS sensor IDs
Display tire pressure rep ...
C1741-21 Tire Pressure Sensor No Data Fl
Dtc Description
DTC Description
Note:
The Signal Tech II Tool [– (NI-50190)] can be used
to perform the following functions: Refer to the Signal Tech II User
Guide for additional information.
Activate and display TPMS sensor IDs
Display tire pressure rep ...
P052a Intake Valve Timing Control
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis
content)
DTC detecting
condition
...