P2655 code meaning
"A" Rocker Arm Actuator Control Circuit/Open (Bank 2)
Powertrain system Generic code P26xx codes Check engine light
What P2655 means
P2655 is the bank 2 twin of P2645: on a V or boxer engine with a separate rocker arm actuator per cylinder bank, the drive circuit of actuator A on the side without cylinder 1 is open, so the state the controller sets and the state it sees on the wire differ. No manufacturer documents P2655 publicly. As an analogy, GM's 2015 table 15OBDG05 runs the bank 1 version with 100 failures out of 120 samples at 250 ms intervals and a Type A MIL. A broken wire in the harness running across the engine, a backed-out terminal or an open coil are plausible. Only bank 2 then loses lift switching, which can make the banks run unevenly and cause rough running.
P2655 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2655
- MIL on
- Banks run unevenly, slight roughness
- Reduced power or economy
Common causes of P2655
- PossibleBroken wire in the harness to the bank 2 solenoid
- PossibleTerminal pushed out of the connector housing
- PossibleOpen coil in the bank 2 oil control solenoid
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Rocker arm actuator a b2Oil control valveWiring harness
What each part of P2655 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. |
| 55 | The exact fault in that area. |
What to do next
- Note P2655 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 P2655
What does P2655 mean?
P2655 means ""A" Rocker Arm Actuator Control Circuit/Open (Bank 2)". P2655 is the bank 2 twin of P2645: on a V or boxer engine with a separate rocker arm actuator per cylinder bank, the drive circuit of actuator A on the side without cylinder 1 is open, so the state the controller sets and the state it sees on the wire differ. It is a generic code, so it means the same on every make.
Is it safe to drive with P2655?
Drive gently and only to a workshop. With P2655 the car can go into limp mode (reduced power) to protect itself.
Will P2655 fail an emissions test?
Yes, it can. P2655 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 P2655 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2655 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.