Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC PRIORITY
If DTC P0012 is displayed with DTC P0075, first perform the trouble diagnosis for DTC P0075.

Is applicable DTC detected?

YES

Perform diagnosis of applicable. Refer to DTC Description .

NO

GO TO 2.

CHECK OIL PRESSURE WARNING LAMP

Start engine.

Check oil pressure warning lamp and confirm it is not illuminated.

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OK or NG

GO TO 3.

Go to Changing Engine Oil .

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to Component Inspection .

OK or NG

OK

GO TO 4.

NG

Replace malfunctioning intake valve timing control solenoid valve. Refer to Exploded View .
CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to Component Inspection .

OK or NG

OK

GO TO 5.

NG

Replace crankshaft position sensor (POS). Refer to Exploded View .
CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to Component Inspection .

OK or NG

OK

GO TO 6.

NG

Replace malfunctioning camshaft position sensor (PHASE). Refer to Component Inspection .

CHECK CAMSHAFT (INTAKE)

Check the following.

Accumulation of debris on the signal plate of camshaft rear end

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Chipping signal plate of camshaft rear end

OK or NG

GO TO 7.

Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to Removal and Installation .

CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misalignment.

Are there any service records that may cause timing chain misalignment?

Yes or No

YES

Check timing chain installation. Refer to Exploded View .

NO

GO TO 8.
CHECK LUBRICATION CIRCUIT
Refer to Lubrication Circuit .

OK or NG

OK

GO TO 9.

NG

Clean lubrication line.
CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .

INSPECTION END