P1221 Engine Trouble Code
When you check engine light came on code P1221 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P1221 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
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.
P1221 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Fuel And Air Metering||Ambient Air Temperature Sensor Circuit Low||Crankshaft Position Sensor A Circuit Malfunction||Glow Plug/Heater Circuit 'A' Malfunction|
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.
P1221 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1221 OBD-II Trouble Code Traction Control System Malfunction Input is one of the definitions for the P1221; however your vehicles manufacturer may have a different definition for the P1221 code. Please check below for your sp P1221 code.
Reason For P1221 CodeThe reason of P1221 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.
P1221 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.