Often, you’ll get a message informing you that the fuel cap is off even when it is on.
#2015 jeep grand cherokee navigation system code
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P0440 is normally not an immediate threat to the drive-ability of your Grand Cherokee. Since it is only letting you know that something is wrong with the EVAP system, it is almost always accompanied by It often appears with, or is related other codes, such as: P0440: Evaporative Emission Control System Malfunction It does not allude to what that problem might be. P0440 Indicates that something is wrong with the EVAP system. This trouble code references a number that is given to you when you plug your Grand Cherokee into a OBDII scanner. A very common trouble code with the Jeep Grand Cherokee is the P0440 code.