P0171 TOYOTA -

Question

my toyota land cruiser 2006 4700cc v8 we have a code engine no. P0171 SYSTEM TO LEAN Bank 1 , any help !!!!!!!!!!!!!!!!!!!!!!

Answer 1

Hi there,

Check for any possible intake manifold gasket or vacuum leaks. You may also have an issue with the front O2 sensor on the bank 1 of the engine. This is a common problem when you only have the lean fuel mixture on one side of the engine.