Question 1

What does P2647 mean?

Accepted Answer

P2647 - Rocker Arm Actuator System Stuck On (Honda). Honda-specific: VTEC system stuck in the on/high-cam position.

Question 2

What are the symptoms of P2647?

Accepted Answer

Check engine light, Rough low-RPM performance, Engine may feel surgy at low speed

Question 3

What causes P2647?

Accepted Answer

VTEC solenoid stuck open, Wiring short keeping solenoid energized, Oil pressure issue, Valve body issue

Question 4

How much does it cost to fix P2647?

Accepted Answer

Typical repair cost: $30-$500. VTEC stuck on means high-cam profile active at all RPMs. Check VTEC solenoid and its wiring.

P2647 — Rocker Arm Actuator System Stuck On (Honda)

Don't guess — diagnose P2647 the right way