2001 Lincoln Navigator
I ran a OBD scan today and these 6 codes popped up, will some please translate and tell me exactly what needs to be replaced.
P0136 02 sensor circuit malfunction Bank 1 Sensor 2
P0156 02 sensor circuit malfunction Bank 2 Sensor 2
P0171 System too lean Bank 1
P0175 System too lean Bank 2
P1131 Lack of HO2S11 Switches - Sensor Indicates Lean
P1151 Lack of HO2S21 Switches - Sensor Indicates Lean
thanks in advanced.