Trouble code P0171 means:System too lean (Bank 1)
Trouble code P0171 means:System too lean (Bank 1)
Trouble code P0171 means: Fuel System Too Lean - Bank 1
Trouble code P0171 means: System Too Lean (Bank 1)
Trouble code P0171 means: System Too Lean (Bank 1)
Trouble code P1135 means: Air-Fuel Sensor Heater Circuit Response Malfunction
Trouble code P0171 means: Fuel Trim System Lean (Bank 1)
Trouble code P0171 means: System Too Lean (Bank 1)
Trouble code P0171 means:System too lean (Bank 1)
Trouble code P0171 means: Fuel Trim Lean (Bank 1)
Trouble code P0171 means: Fuel Trim System Lean (Bank 1)
replace oxygen sensor on the left bank(side towards front of car) it is located on the exhaust manifold staring you in face when hood is open Read more: Toyota Highlander Limited what does trouble code p1150 on - JustAnswer http://www.justanswer.com/toyota/490ow-toyota-highlander-limited-does-trouble-code-p1150.html#ixzz1T8tewlwW
Trouble code P0171 means: Fuel Trim System Lean (Bank 1) Trouble code P0174 means: Fuel Trim System Lean (Bank 2)