Nissan Rogue (T33) 2021-Present Service Manual: P2c91 Crankcase Ventilation System
DTC Description
DTC DETECTION LOGIC
| DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition | ||
| P2C91 | 00 |
Crankcase Ventilation System - Hose "B" Disconnected (Crankcase Pressure Sensor "A" Circuit Low) |
Diagnosis condition |
|
| Signal (terminal) | - | |||
| Threshold | Crankcase pressure exceeds specified value | |||
| Diagnosis delay time | - | |||
POSSIBLE CAUSE
-
Harness or connectors
(Crankcase ventilation valve circuit is open or shorted.)
-
Blow-by hose (Fresh air hose, admission valve hose, and PCV valve hose)
-
PCV valve
-
Crankcase ventilation valve
-
Oil level gauge come off
-
Crankcase presser sensor
-
Intake system failure
(Manifold absolute pressure sensor, admission valve)
-
Oil filler cap come off
FAIL-SAFE
Not applicable
DTC Confirmation Procedure
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
-
Turn ignition switch OFF and wait at least 10 seconds.
-
Turn ignition switch ON.
-
Turn ignition switch OFF and wait at least 10 seconds.
>>
GO TO 2.
PERFORM DTC CONFIRMATION PROCEDURE
-
Start engine and warm it up to normal operating temperature.
-
Let it idle at least 60 seconds under the following condition.
-
A/C switch: OFF
-
Selector lever: N
-
-
Drive and accelerate the Nissan Ariya vehicle for 10 seconds under the following condition.
-
Engine speed: 1,800 - 1,900 rpm
CAUTION:
Always drive Nissan Ariya vehicle at a safe speed.
-
-
Check DTC.
Is 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
CHECK OIL LEVEL GAUGE
Check installation condition of oil level gauge.
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace error-detected parts.
CHECK BLOW-BY HOSE
Check blow-by hose (fresh air hose, admission valve hose, and PCV valve hose) for disconnected or damege.
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace error-detected parts.
CHECK CRANKCASE, ROCKER COVER, AND FRONT COVER
Visually check crankcase, rocker cover, and front cover for damege.
Is the inspection result normal?
YES>>GO TO 4.
NO>>Replace the error-detected parts.
CHECK PCV VALVE
Check the PCV valve. Refer to POSITIVE CRANKCASE VENTILATION : Periodic Maintenance.
Is the inspection result normal?
YES>>GO TO 5.
NO>>Replace PCV valve. Refer to Exploded View.
CHECK CRANKCASE VENTILATION VALVE
Check crankcase ventilation valve. Refer to Diagnosis Procedure.
Is the inspection result normal?
YES>>GO TO 6.
NO>>Repair or replace error-detected parts.
CHECK CRANKCASE PRESSURE SENSOR
Check the crankcase pressure sensor. Refer toComponent Inspection.
Is the inspection result normal?
YES>>INSPECTION END
NO>>Replace crankcase pressure sensor. Refer to Exploded View.
Other materials:
Dtc/circuit Diagnosis. P161e-00 Immobilizer
DTC Description
DTC DETECTION LOGIC DTC No.
CONSULT screen items
(Trouble diagnosis content) DTC detecting condition
P161E-00
IMMOBILIZER
(Immobilizer)
Diagnosis condition
Ignition switch ON
Signal (terminal)
—
Threshold
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