P2663 code meaning
"B" Rocker Arm Actuator Control Circuit Low (Bank 2)
Powertrain system Generic code P26xx codes Check engine light
What P2663 means
P2663 is stored when the control line to solenoid B on bank 2 reads too low, most often a short to ground somewhere between the module and the second cylinder head. On V engines that harness branch often runs along the back of the block or under the intake manifold, where heat and vibration wear through insulation. A coil whose resistance has collapsed gives the same picture. No carmaker documents P2663 publicly with thresholds. The principle can be seen in GM's 15OBDG05 table for 2015 four-cylinders on the matching actuator A circuit, with 100 failures in 120 samples above 11 V triggering a Type A fault. CARB counts circuit shorts among the faults to be caught. Many drivers switch off for protection, leaving stage B on that bank idle. Bank 1 equivalent: P2653.
P2663 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2663
- MIL on
- Stage B on bank 2 out of action, power or economy reduced
Common causes of P2663
- Most likelyBank 2 control wire worn through and touching ground
- PossibleBank 2 solenoid B coil with collapsed resistance
- Less likelyFaulty output driver for bank 2 solenoid B
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 P2663 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. |
| 63 | The exact fault in that area. |
What to do next
- Note P2663 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 P2663
What does P2663 mean?
P2663 means ""B" Rocker Arm Actuator Control Circuit Low (Bank 2)". P2663 is stored when the control line to solenoid B on bank 2 reads too low, most often a short to ground somewhere between the module and the second cylinder head. It is a generic code, so it means the same on every make.
Is it safe to drive with P2663?
Drive gently and only to a workshop. With P2663 the car can go into limp mode (reduced power) to protect itself.
Will P2663 fail an emissions test?
Yes, it can. P2663 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 P2663 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2663 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.