P2B51

Symptoms

• Unstable engine idling
• Reduced engine power and response
• Increased fuel consumption
• Possible misfires
• Check engine light comes on

Causes

• Jamming of the variable valve timing mechanism
• Low or poor quality engine oil
• VVT solenoid dirty
• Problems with the electrical control circuit (open, short)
• Mechanical damage to VVT gear

How to Fix

1. Check the level and condition of the engine oil
2. Diagnose VVT solenoid operation
3. Check the electrical control circuit of the mechanism
4. Clean or replace the phase change mechanism
5. If necessary, replace the VVT camshaft gear

Related codes

Error P2B51 by Vehicle Brand