P2B3D: the control wire of the second exhaust-side profile actuator on bank 2 (camshaft B, actuator B) has contact with ground. Publicly documented use by a manufacturer is not known. For comparison, GM's L3B diagnostics define the bank 1 code P2B3A as a ground short of at most 0.5 Ω with the driver on and four failed tests out of five. Because 13 CCR 1968.2 requires engine control outputs to be monitored for such faults, a V engine with exhaust lobe switching on both banks would need this code. Look for chafing at brackets and valve cover edges or for a shorted coil. The exhaust valves on bank 2 then keep their current lift profile, and any function that relies on switching there is unavailable.
Medium severity. Can I keep driving?Drive little and gently. If you hear timing chain noise or the oil light comes on, shut off the engine.
Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines.
Symptoms
- Check engine light on
- Bank 2 exhaust stays on one lift profile
Most likely causes
- Wire chafed at a bracket or valve cover edge on bank 2
- Shorted coil in exhaust actuator B
- Oil or water in the connector
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It can trigger limp mode.
- It affects emissions.
What each character of P2B3D means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- B: Subsystem depends on the code range
- 3D: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2B3D?
Drive little and gently. If you hear timing chain noise or the oil light comes on, shut off the engine.
What causes code P2B3D?
The most common causes are: wire chafed at a bracket or valve cover edge on bank 2; shorted coil in exhaust actuator B; oil or water in the connector.
Related codes
- P2B3CB Camshaft Profile Actuator B Control Circuit/Open Bank 2
- P2B3EB Camshaft Profile Actuator B Control Circuit High Bank 2
- P2B3AB Camshaft Profile Actuator B Control Circuit Low Bank 1
- P2B37A Camshaft Profile Actuator B Control Circuit Low Bank 2
- P002EB Camshaft Profile Actuator A Control Circuit Low Bank 2
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.