2006 Ford Mustang(V-6) gave me a P2195 code.

Running too lean, Bank 1.

Already checked the PCV breather tube, but this engine is newer than anything I've worked on so I'm a little lost.

Where else should I look?

oxygen sensor

Unplug the battery for a few minutes and see if it turns off.

JDH is prob' right.


found this-
Potential causes of a P2195 code include: Oxygen (O2) or A/F ratio sensor or sensor heater malfunction Open or short in O2 sensor circuit (wiring, harness) Fuel pressure or fuel injector problem Faulty PCM Intake air or engine vacuum leaks Faulty fuel injector(s) Fuel pressure too high or too low PCV system leak/fault A/F sensor relay faulty MAF sensor malfunction ECT sensor malfunction Fuel pressure too low Fuel leak Air suction in air intake system

If the 02 sensor is switching like it should then it is most likely an exhaust or intake manifold leak. Bank 1 should be the passenger's side on that engine. Check for exhaust leaks upstream or downstream of the upstream 02 sensor. If fresh air is getting in the system it will throw a lean code. Usually if it is fuel related it will start knocking and you will get misfire codes too.