Subaru Stella P0821 Engine Trouble Code
Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.
Subaru Stella P0821 Code Meaning :
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine
Intake Valve Control Solenoid Circuit Low
Engine Oil Temperature Sensor Malfunction
Cylinder 10 Contribution/balance Fault
Exhaust Gas Recirculation Sensor B Circuit High

When you check Subaru Stella car engine light came on code P0821 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P0821 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
P0821 OBD-II Diagnostic Powertrain (P) Trouble Code Description
P0821 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.Reason For P0821 Code
The reason of P0821 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.P0821 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.
P0820 Previous Engine Trouble Code For Subaru Stella | Next Engine Trouble Code For Subaru Stella P0822 |