Restricted performance and MIL lit.

Question

Getting P0171 & P0174 intermittently during acceleration, also when using normal petrol it pinks a lot, using all premium petrol still get the same 2 codes but less pinking?

Answer 1

Hi there,

These codes indicate the fuel mix is too lean on bank 1 and 2. Here is a list of possible causes.

P0171 JAGUAR - System Too Lean Bank 1

Read more: https://www.autocodes.com/p0171_jaguar.html