Code P002D: Camshaft Profile Control Circuit B / Bank 2 Open
The generic diagnostic trouble code P002D indicates a problem detected by the Powertrain Control Module (PCM) in the control circuit for the exhaust camshaft profile (typically designated “B”) on cylinder bank number 2. Its severity is medium and requires diagnosis.
System Role and Operation
The camshaft is responsible for opening and closing the valves. Modern engines often use a Variable Valve Timing (VVT) system which allows the “profile” or timing of the camshaft to be altered to optimize cylinder filling, power, and fuel economy based on engine speed and load. This is typically accomplished via a hydraulically actuated device (often an oil control solenoid) electronically controlled by the PCM.
The term “Bank 2” refers to the side of the engine that does not contain cylinder number 1. The letter “B” most often refers to the exhaust camshaft. Always consult the specific repair manual for your vehicle (make, model, year, engine) for accurate identification.
Symptoms of Code P002D
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine performance
- Poor acceleration and abnormal throttle response
- Increased fuel consumption
- Irregular idle speed
- In rare cases, the engine may enter limp mode
Possible Causes of the Fault
- Engine oil related issue: Low level, incorrect or degraded oil, contaminated oil (dirt, sludge)
- VVT control solenoid failure (sticking, clogging, electrical fault)
- Electrical problem: Damaged wires, loose or corroded connector, short circuit or open circuit
- Mechanical problem: Faulty VVT actuator
- Problem with the PCM (less common)
Diagnostic and Troubleshooting Procedure
⚠️ Caution: These steps are generic. Vehicle-specific technical documentation is highly recommended.
Step 1: Engine Oil Check
Check the oil level and condition. Oil that is black, too old, or of incorrect viscosity is a common cause. If necessary, perform a complete oil change with the oil and filter recommended by the manufacturer.
Step 2: Visual and Electrical Inspection
Locate the VVT control solenoid on bank 2. Visually inspect the electrical connector and wiring harness for any signs of damage, corrosion, or poor connection. With the engine off, disconnect the connector and check the supply voltage and ground using a multimeter. Clean the terminals with electrical contact cleaner.
Step 3: VVT Solenoid Test
Test the solenoid’s resistance (using an ohmmeter) and compare it to the manufacturer’s specified values. You can also test its operation by applying a 12V power source (verify that the valve moves and makes a “click” sound).
Step 4: Advanced Diagnostics
If the previous steps have not resolved the problem, using an advanced scan tool to observe live data (PIDs) from the VVT system and performing component activation tests are necessary. Insufficient oil pressure or an internal mechanical problem (actuator) may be the cause.
Need help? Code P002D can be complex to diagnose. If basic checks are not sufficient, consult a professional mechanic equipped with specialized diagnostic tools for an accurate diagnosis and reliable repair.