1999 Land Rover Range Rover 4.0L V8 with engine codes P1172 and P1175

Question

1999 Land Rover Range Rover 4.0L V8, gasoline and auto transmission. Check engine light on with codes P1172 and P1175

Answer 1

P1172 Fuel system, Bank 1 lean/rich

P1175 Fuel system, Bank 2 lean/rich

Check and inspect for vacuum leaks that can affect the operation of the MAF (mass air flow) This is more than likely to be cause of these 2 codes. Also make sure the clamps on the MAF are truly secured.

Answer 2

P1172 LAND-ROVER - LH Bank Lambda Control Adaption Over Time Too Small
Read more: https://www.autocodes.com/p1172_land-rover.html

P1175 LAND-ROVER - RH Bank Lambda Control Adaption Over Time Too Small
Read more: https://www.autocodes.com/p1175_land-rover.html