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Code

P0021

Variable valve timing

Intake camshaft timing over-advanced — Bank 2

Bank 2 intake cam advanced out of range.

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Most likely causes

Low or dirty oil
Faulty VVT solenoid
Wiring fault

Symptoms you may notice

Check engine light
Rough idle

Checks to run

Check oil
Test the VVT solenoid
Check wiring

Tools you may need

OBD-II scanner Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Variable valve timing

Intake camshaft timing over-advanced — Bank 1

Intake camshaft timing over-retarded — Bank 1

Crankshaft / camshaft position correlation — Bank 1

Crankshaft / camshaft position correlation — Bank 1 Sensor B

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