Cadillac 50 U3421 Engine Trouble Code

When your car's 'Cadillac 50 U3421 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

Cadillac 50 U3421 Code Meaning :

When you check Cadillac 50 car engine light came on code U3421 the reason should be . However manufacturer may have a different definition for the U3421 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U3421 OBD-II Diagnostic Network (U) Trouble Code Description

U3421 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For U3421 Code

The reason of U3421 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

U3421 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.

U3420 Previous Engine Trouble Code For Cadillac 50

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