P2621 Engine Trouble Code
When you check engine light came on code P2621 the reason should be . However your vehicle's manufacturer may have a different definition for the P2621 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.
P2621 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Fuel And Air Metering (Injector Circuit Malfunctions Only)||O2 Sensor Heater Circuit Malfunction||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.
P2621 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP2621 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.
Reason For P2621 CodeThe reason of P2621 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.
P2621 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.