Chevrolet Fb P3990 Engine Trouble Code

Chevrolet Fb P3990 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

Chevrolet Fb P3990 Code Meaning :

When you check Chevrolet Fb car engine light came on code P3990 the reason should be . However manufacturer may have a different definition for the P3990 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P3990 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3990 engine trouble code is about Reverse Input Circuit.

Reason For P3990 Code

The reason of P3990 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P3990 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.

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