Chevrolet Fb P3991 Engine Trouble Code

When the check engine light comes Chevrolet Fb P3991 code on the first you should check is the gas cap. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. Continue driving and see if the check engine light turns off. Alternately, you can purchase a gas cap for about $3 at an auto parts store. All you need to do is take the old one off and screw on the new one. If you've already made it to the store, you might as well just replace it. While not car-threatening, it's good to take care of this right away to improve gas mileage.

Chevrolet Fb P3991 Code Meaning :

When you check Chevrolet Fb car engine light came on code P3991 the reason should be . However manufacturer may have a different definition for the P3991 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P3991 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3991 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For P3991 Code

The reason of P3991 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P3991 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.

P3990 Previous Engine Trouble Code For Chevrolet Fb

Next Engine Trouble Code For Chevrolet Fb P3992