Cadillac Fleetwood P1939 Engine Trouble Code

When the check engine light comes Cadillac Fleetwood P1939 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.

Cadillac Fleetwood P1939 Code Meaning :

When you check Cadillac Fleetwood car engine light came on code P1939 the reason should be . However manufacturer may have a different definition for the P1939 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P1939 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1939 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For P1939 Code

The reason of P1939 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P1939 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.

P1938 Previous Engine Trouble Code For Cadillac Fleetwood

Next Engine Trouble Code For Cadillac Fleetwood P193A