View source for 16555/P0171/000369

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== 16555/P0171/000369 - Fuel Trim; Bank 1: System Too Lean ==

==== Possible Causes ====

* Mass Air Flow Sensor (G70) defective<br>
* Intake System Leak(s)

==== Possible Solutions ====

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

==== Special Notes ====

* [[Fuel Trim Info]]
* [http://forums.ross-tech.com/showthread.php?2612-TFSI-Oil-leak-Not-a-VCDS-releated-question-or-is-it TFSI - Oil leak - TFSI - Oil leak - Not a VCDS related question? or is it? ]

[[Category:Fault Codes]]