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P0420 Engine Trouble Code

P0420 Engine

When you check engine light came on code P0420 the reason should be Three way catalytic converter Bank 1 does not operate properly.. However your vehicle's manufacturer may have a different definition for the P0420 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.

P0420 Code Meaning :

P 0 4 2 0
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Fuel Temperature Sensor B Circuit Range/Performance Crankshaft Position Sensor A Circuit Malfunction Exhaust Gas Recirculation Sensor B Circuit High

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.

P0420 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0420 OBD-II Trouble Code The Engine Control Module ( P0420 code.

Reason For P0420 Code

The reason of P0420 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

P0420 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.