P2660 code meaning
"B" Rocker Arm Actuator Control Circuit/Open (Bank 2)
Powertrain system Generic code P26xx codes Check engine light
What P2660 means
P2660 concerns V-type or boxer engines with switchable rocker arms on both cylinder banks: the controller sees the drive circuit of solenoid B on bank 2, the side without cylinder 1, as broken. An open coil, a disconnected plug after valve cover work, or a cut wire leaves the output without load, so the command and the electrical feedback disagree. No manufacturer documents P2660 publicly, and the Honda V6 cases on record involve bank 1 only. GM's 2015 table 15OBDG05 illustrates the method on actuator A with a driver check from 11 V upward and 100 failures in 120 samples. CARB requires circuit monitoring on every lift system output. The bank 1 equivalent is P2650; shorts on this line are P2663 and P2664.
P2660 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2660
- MIL on
- Bank 2 B stage inactive, uneven running between banks possible
Common causes of P2660
- Most likelySolenoid B plug on bank 2 left unplugged or not latched after repairs
- PossibleOpen coil in bank 2 solenoid B
- PossibleCut or broken wire on the bank 2 harness branch
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Rocker arm actuator b b2Oil control valveWiring harness
What each part of P2660 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 60 | The exact fault in that area. |
What to do next
- Note P2660 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2660
What does P2660 mean?
P2660 means ""B" Rocker Arm Actuator Control Circuit/Open (Bank 2)". P2660 concerns V-type or boxer engines with switchable rocker arms on both cylinder banks: the controller sees the drive circuit of solenoid B on bank 2, the side without cylinder 1, as broken. It is a generic code, so it means the same on every make.
Is it safe to drive with P2660?
Drive gently and only to a workshop. With P2660 the car can go into limp mode (reduced power) to protect itself.
Will P2660 fail an emissions test?
Yes, it can. P2660 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2660 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2660 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.