Po 037 rear oxygen sensor malfunction. replace the rear oxygen sensor that should solve your problem, then have engine light shut off or drive a few days and computer will shut off after it completes its testing and everything passes. hope this is helpful.
Rear oxygen sensor heater circuit malfunctiion. standard code definition for all the vehicules. I'm not a Subaru specialist but you your vehicule could be equipped with two oxygen sensors. The front one located into/near the engine exhaust manifold and the rear one located near the catalytic converter. The specific code you're getting is associated to the rear one. First check the wiring and connection of your rear sensor for burned wire or corrosion/dirty in the connector. If the unit has never been replaced and your millage is around/over 100,000 mile, it's easy to think that your unit could be bad and must be replaced. Easy to replace by yourself as long as you have the right wrench size fiiting the the bottom like nut seat.
Answers & Comments
Po 037 rear oxygen sensor malfunction. replace the rear oxygen sensor that should solve your problem, then have engine light shut off or drive a few days and computer will shut off after it completes its testing and everything passes. hope this is helpful.
Rear oxygen sensor heater circuit malfunctiion.
standard code definition for all the vehicules.
I'm not a Subaru specialist but you your vehicule could be equipped with two oxygen sensors. The front one located into/near the engine exhaust manifold and the rear one located near the catalytic converter.
The specific code you're getting is associated to the rear one.
First check the wiring and connection of your rear sensor for burned wire or corrosion/dirty in the connector. If the unit has never been replaced and your millage is around/over 100,000 mile, it's easy to think that your unit could be bad and must be replaced.
Easy to replace by yourself as long as you have the right wrench size fiiting the the bottom like nut seat.
Hope it will help
Sorry for my englis
Dan