VW:B2:New Beetle:GH-1YAZJ:ENG:MIL on:DTC:17559:P1151:too Lean:
WN17No8p20B
17559/P1151/004433 -
Long Term Fuel Trim Additive Air; Bank 1; Range 1: System too Lean.
Possible Symptoms. Malfunction Indicator Lamp (MIL) active.
Possible Causes. Intake System faulty/leaking;
Fuel Pressure, Fuel Pressure Regulator and Fuel Pump faulty;
Fuel Injectors faulty/leaking;
Exhaust System faulty/leaking;
Activated-Charcoal Filter/System faulty/leaking;
Secondary Air Injection System faulty/leaking;
Lambda/Oxygen Sensor(s) before Catalytic Converter faulty ...
Lambda/Oxygen Sensor(s) after Catalytic Converter faulty
Possible Solutions
Check Intake System for Leaks
Check Fuel Pressure, Fuel Pressure Regulator and Fuel Pump
Check Fuel Injectors
Check Exhaust System for Leaks
Check Activated-Charcoal Filter/System
Check Secondary Air Injection System
Check Lambda/Oxygen Sensor(s) before Catalytic Converter
Check Lambda/Oxygen Sensor(s) after Catalytic Converter
Special Notes
See Fuel Trim Info
http://wiki.ross-tech.com/wiki/index.php/17559/P1151/004433