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Proton Persona P0421 Engine Trouble Code

Proton Persona P0421 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. Taking your car into a shop will cost you around $200 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

Proton Persona P0421 Code Meaning :

P
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine
0
Intake Valve Control Solenoid Circuit Low
4
Engine Oil Temperature Sensor Malfunction
2
Cylinder 10 Contribution/balance Fault
1
Exhaust Gas Recirculation Sensor B Circuit High
Proton Persona Engine

When you check Proton Persona car engine light came on code P0421 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P0421 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0421 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0421 OBD-II Trouble Code The Engine Control Module ( P0421 code.

Reason For P0421 Code

The reason of P0421 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P0421 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.

P0420 Previous Engine Trouble Code For Proton Persona Next Engine Trouble Code For Proton Persona P0422

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