P2647 on 2011-2017 Honda Odyssey (EX-L, Touring, Elite) — "A" Rocker Arm Actuator System Stuck On (Bank 1)
1 vehicles · 1 makes · $200-$800 repair
Most Reported On
P2647 is an OBD-II diagnostic trouble code meaning “"A" Rocker Arm Actuator System Stuck On (Bank 1).” The ECM detects the bank 1 'A' rocker arm actuator system is stuck in the on (engaged/high-lift or deactivated) state and won't return when commanded off — the variable valve mechanism remains engaged inappropriately. This code is most commonly reported on 2011-2017 Honda Odyssey (EX-L, Touring, Elite), with repair costs ranging from $200 to $800.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2647, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does P2647 mean?
P2647 stands for ""A" Rocker Arm Actuator System Stuck On (Bank 1)." The ECM detects the bank 1 'A' rocker arm actuator system is stuck in the on (engaged/high-lift or deactivated) state and won't return when commanded off — the variable valve mechanism remains engaged inappropriately.
What are the most common causes of P2647?
The most common causes of P2647 are: Stuck rocker arm oil control solenoid (stuck open), Oil pressure not relieving from the mechanism, Sludge/debris holding the actuator engaged, Mechanical fault in the variable rocker assembly, Wiring fault holding the solenoid energized. The specific cause varies by vehicle.
How much does it cost to fix P2647?
Repair costs for P2647 range from $200 to $800, depending on the vehicle and root cause.
Which vehicles are affected by P2647?
Au7o has documented P2647 across 1 vehicle models from 1 manufacturers: Honda.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.