P0011 2002 Nissan Altima Sedan -

Question

How does it get fixed? and how much is the cost to fix the problem?

Answer 1

p0011 Intake valve timing control solenoid valve bank 1 

Since the Intake valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code.
 

if that does not help replace the Intake Valve Timing Control Solenoid Valve factory part $150 to $200