P1152 – Intake Valve Timing Control Range/Performance (Bank 1, Nissan)

Description

The ECM detected a VVT signal outside the expected range on Bank 1.

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Symptoms

Rough idle
Poor acceleration
Hesitation
Reduced power
Check engine light

Causes

Faulty VVT sensor
Stuck OCV valve
Low oil pressure
Timing chain wear

Diagnosis

Test VVT sensor
Inspect OCV valve
Measure oil pressure
Scan VVT data

Repair

Replace VVT sensor
Replace OCV valve
Restore oil pressure