P2660 — Problem with rocker arm actuator control circuit on bank 2

The engine’s variable valve timing system on bank 2 is not working properly because the rocker arm actuator control circuit is open or has a wiring issue. This affects how the engine adjusts valve timing for better performance and efficiency.

Common causes

The cause is almost always one of a few things. Here they are — P2660 rarely comes from anything outside this list:

• Faulty rocker arm actuator solenoid
• Damaged or corroded wiring/connectors in actuator circuit
• Blown fuse or relay related to actuator control
• Engine control module (ECM) malfunction
• Mechanical failure in the rocker arm actuator

Where to start

In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:

1. Inspect and repair wiring and connectors for damage or corrosion
2. Check and replace any blown fuses or faulty relays
3. Test rocker arm actuator solenoid and replace if faulty
4. Clear the code and test drive to confirm repair
5. Replace rocker arm actuator or related mechanical parts if needed

That is what holds for P2660 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.