P2B3C code meaning
B Camshaft Profile Actuator B Control Circuit/Open Bank 2
Powertrain system Generic code P2Bxx codes Check engine light
What P2B3C means
This code reports an interrupted control circuit at actuator B on the exhaust camshaft (camshaft B) of bank 2. No vehicle manufacturer is known to use P2B3C in public documents. Its bank 1 twin P2B39 appears in GM's tables for the 2.7-litre L3B, an inline engine without a second bank, where an impedance of 200 kΩ or more with the output on counts as open. Audi's later 2.0 TFSI applies its valvelift system to the exhaust valves, which shows that exhaust lobe switching is in production, but that engine also has a single bank. CARB's requirement for circuit monitoring of output components is the basis. An unplugged connector, a broken lead or an open solenoid coil will stop the exhaust sleeve on bank 2 from moving.
P2B3C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2B3C
- Check engine light on
- Exhaust lift on bank 2 no longer switches
Common causes of P2B3C
- Most likelyConnector of the bank 2 exhaust actuator unplugged or loose
- PossibleBroken lead to the actuator
- PossibleOpen coil in exhaust actuator B
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
B camshaft profile actuator b b2Wiring harnessECM
What each part of P2B3C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| B | Area: hybrid propulsion. |
| 3C | The exact fault in that area. |
What to do next
- Note P2B3C 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 P2B3C
What does P2B3C mean?
P2B3C means "B Camshaft Profile Actuator B Control Circuit/Open Bank 2". This code reports an interrupted control circuit at actuator B on the exhaust camshaft (camshaft B) of bank 2. It is a generic code, so it means the same on every make.
Is it safe to drive with P2B3C?
Drive gently and only to a workshop. With P2B3C the car can go into limp mode (reduced power) to protect itself.
Will P2B3C fail an emissions test?
Yes, it can. P2B3C 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 P2B3C to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2B3C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.