Nissan Sentra B18 (2020-2025) Service Manual: P044b Egr Volume Control Valve Position Sensor
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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P044B |
EGR SENSOR C (EGR Sensor "C" Circuit Range/Performance) |
Diagnosis condition |
After warming up, switch OFF the ignition every time the engine is stopped. |
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Signal (terminal) |
― |
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Threshold |
When EGR volume control valve is fully closed or fully opened, sensor output is out of the specified range. |
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Diagnosis delay time |
0.3 seonds or more |
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POSSIBLE CAUSE
EGR volume control valve failure (sensor failure, internal gear damage, valve movement is not smooth)
FAIL-SAFE
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Fail safe mode |
Nissan Sentra Vehicle behavior |
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|---|---|---|
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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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Device fix mode |
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DTC CONFIRMATION PROCEDURE
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PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
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Turn ignition switch OFF and wait at least 10 seconds.
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Turn ignition switch ON.
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Turn ignition switch OFF and wait at least 10 seconds.
GO TO 2.
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PERFORM DTC CONFIRMATION PROCEDURE
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Start the engine and warm it up to normal operating temperature.
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Stop the engine.
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Switch ON the ignition and wait at least 3 seconds.
Is the 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
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Dtc Diagnosis Procedure
DTC Diagnosis Procedure
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REPLACE EGR VOLUME CONTROL VALVE
Replace EGR volume control valve. Refer to Removal and Installation.
>>INSPECTION END
Other materials:
Accelerator Control System. Removal and Installation. Accelerator Control System
Accelerator Control System
Exploded View
Exploded View
1.
Accelerator pedal
assembly
2.
Brake pedal bracket
...
Abs Warning Lamp
Component Function Check
Component Function Check
CHECK ABS WARNING LAMP FUNCTION
Check that ABS warning lamp in combination meter
turns ON for 1 second after ignition switch is placed ON.
CAUTION:
Never start th ...
Noise, Vibration and Harshness (nvh) Troubleshooting. Nvh Troubleshooting Chart
Nvh Troubleshooting Chart
NVH Troubleshooting Chart
Use the chart below to find the cause of the
symptom. If necessary, repair or replace these parts.
...