What this code means

The exhaust valve control solenoid on Bank 1 has an intermittent electrical connection.

Symptoms

• Check Engine Light intermittent
• Occasional rough idle
• Sporadic emissions increase
• Variable idle quality
• Check Engine Light clears and returns

Common causes

• Loose solenoid connector
• Wiring intermittent near exhaust
• Solenoid failing under heat
• Connector corrosion
• Vibration-related wire break

Diagnostic steps

1. Monitor exhaust VVT data for dropouts
2. Wiggle test on solenoid connector
3. Inspect wiring near exhaust manifold
4. Test solenoid hot and cold
5. Check connector integrity

Repair notes

Replace exhaust VVT solenoid or repair intermittent wiring.

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