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P219F Powertrain - CEL & All Safety Features Off

5K views 7 replies 4 participants last post by  JLKnighten  
This fault is diagnosed as P219C (cyl 1) in the FSM. Check battery, grounds, AF sensor connector for water, AF sensor output using a scan tool, vacuum leak or gap between MAF and throttle, exhaust leaks and fueling.

Post up whether it comes back or not within the next 100 miles or so. If it does, I'll put up the full diag tree.
 
AF is Air Fuel, the front O2 sensor is a wideband air/fuel sensor.

Go-to SL-i.net and in their search bar type"factory service manual". There's a page on that forum with ALL FSM for Legacy, Outback. Impreza and Foresters. It will send you to a storage site in New Zealand. It's safe.

Edit:. This page Subaru Factory Service Manuals (FSM) - Every Model - USDM/EU