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View Full Version : Seat Leon 1.8 20v fault code



Batunball
02-12-2012, 07:52 PM
Hi all hope someone out there can help me my seat Leon 1.8 20v engine management light came on and the fault code reads bank 1 lean p0171 can any one tell me wot that means and wot I have to do to sort problem thanks:1zhelp:

Crasher
02-12-2012, 07:55 PM
Which year and engine code?

16555 (P0171) - Fuel Trim; Bank 1: System Too Lean

Possible Causes


Mass Air Flow Sensor (G70) defective
Intake System Leak(s)

Possible Solutions


Check Mass Air Flow Sensor (G70)
Check Fuel Pressure Regulation
Check Fuel Pump
Check Injectors
Check Intake System for Leaks
Check Exhaust System for Leaks
Check Secondary Air System for Leaks
Check Vacuum Pipes for Leaks

Batunball
03-12-2012, 08:23 PM
Hi all hope someone out there can help me my seat Leon 1.8 20v engine management light came on and the fault code reads bank 1 lean p0171 can any one tell me wot that means and wot I have to do to sort problem thanks:1zhelp:
Thanks for reply it on a 02 plate code fault code is p0171

Crasher
03-12-2012, 11:31 PM
Engine code, not the fault code...e.g. AGN :rolleyes: