Nissan Versa

 Sedan Service Manual

Engine » Engine control system (EC) » P0014 EVT control
Diagnosis Procedure

1.CHECK OIL PRESSURE WARNING LAMP

1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illuminated.

Is oil pressure warning lamp illuminated?

YES >> Check the engine oil level. Refer to LU, "Inspection".

NO >> GO TO 2.

2.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE

Check the exhaust valve timing control solenoid valve. Refer to EC, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 3.

NO >> Replace exhaust valve timing control solenoid valve. Refer to EM, "Exploded View".

3.CHECK CRANKSHAFT POSITION SENSOR

Check the crankshaft position sensor. Refer to EC, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 4.

NO >> Replace crankshaft position sensor. Refer to EM, "Exploded View".

4.CHECK EXHAUST CAMSHAFT POSITION SENSOR

Check the exhaust camshaft position sensor. Refer to EC, "Component Inspection".

Is the inspection result normal?

YES >> GO TO 5.

NO >> Replace exhaust camshaft position sensor. Refer to EM, "Exploded View".

5.CHECK CAMSHAFT (EXHAUST)

Check the following.

• Accumulation of debris to the signal plate of camshaft rear end
• Chipping signal plate of camshaft rear end

Is the inspection result normal?

YES >> GO TO 6.

NO >> Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to EM, "Removal and Installation".

6.CHECK TIMING CHAIN INSTALLATION

Check service records for any recent repairs that may cause timing chain misaligned.

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

YES >> Check timing chain installation. Refer to EM, "Removal and Installation".

NO >> GO TO 7.

7.CHECK LUBRICATION CIRCUIT

Refer to EM, "Inspection", "INSPECTION AFTER INSTALLATION".

Is the inspection result normal?

YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".

NO >> Clean lubrication line.

DTC Logic

Diagnosis Procedure

Component Inspection