Subaru Forester P0139 Engine Error Code

When you check Subaru Forester car engine light came on code P0139 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Subaru manufacturer may have a different definition for the P0139 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

Do you have fresh, clean fuel in the tank? If it's empty, fill it up and go! If it's full, check P0139 Subaru Forester that the fuel shut-off valve is open and that it is clean. Stale fuel, dirt and debris are the most common cause of outdoor power equipment not starting properly. If you store equipment with untreated gas in the tank, it can lead to engine damage.

Subaru Forester P0139 OBD-II Diagnostic Powertrain (P) Trouble Code Description Subaru Forester car P0139 OBD-II Trouble Code The Heated Oxygen Sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) Reason For Subaru Forester P0139 Code The reason of Subaru Forester P0139 OBD-II Engine Error Code is P0139 O2 Sensor Circuit Slow Response Bank 1 Sensor 2.

The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. P0139 Subaru Forester code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.

Subaru Forester P0139 Possible Solution :

What does fault code P0139 mean for Subaru Forester ? What does a diagnostic reading P0139 mean for Subaru Forester ? How to fix OBD2 Code P0139 for Subaru Forester ? What do we know about P0139 code for Subaru Forester ?