P0021Medium SeverityEngine

Intake Camshaft Position Timing Over-Advanced (Bank 2)

What This Means

The intake camshaft on bank 2 is more advanced than commanded. The VVT system cannot maintain the requested camshaft position on this bank.

Common Symptoms

Rough idle
Stalling
Poor fuel economy
Engine noise on startup

Common Causes

Old or contaminated oil
Faulty VVT solenoid
Clogged oil passages
Worn timing chain
Failed camshaft phaser

Estimated Repair Cost

$150 – $1000

Parts and labor (varies by vehicle and location)

Difficulty:Advanced

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.