P0028 - Intake Valve Control Solenoid Circuit Range/Performance Bank 2
The P0028 code indicates that the Engine Control Module (ECM) has detected a malfunction in the intake valve control solenoid circuit for Bank 2. This solenoid is part of the Variable Valve Timing (VVT) system, which adjusts the timing of the intake valves to optimize engine performance and fuel efficiency. The code is set when the ECM detects that the solenoid's electrical circuit is out of the expected range or the solenoid is not performing as commanded. This can be due to electrical issues, mechanical binding, or oil flow problems.
01. Most Common Causes
- Faulty intake valve control solenoid on Bank 2
- Wiring or connector issues in the solenoid circuit
- Low engine oil level or dirty oil
- Oil flow blockage to the VVT system
- ECM software or hardware failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Rough idle or engine misfire
- Reduced engine power and acceleration
- Poor fuel economy
- Engine stalling
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect engine oil level and condition; change if necessary.
Step 3: Visually check wiring and connectors to the Bank 2 intake valve control solenoid for damage or corrosion.
Step 4: Test the solenoid resistance with a multimeter; compare to manufacturer specs.
Step 5: Perform a solenoid actuation test using a scan tool to verify operation.
Step 6: If solenoid and wiring are okay, check for oil pressure and flow to the VVT system.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances with this code as it can cause poor engine performance and potential damage to the VVT system. You may experience reduced power and fuel economy.
How much does it cost to fix?▼
The cost to fix P0028 typically ranges from $150 to $400, including parts and labor. The solenoid itself costs $50-$150, and labor can be $100-$250 depending on the vehicle.