P1388 Jeep -

Question

P1388 code fuel pump will run till pressure is up, Jeep will start and run till fuel is gone .Fuel pump will not start again till ignition switch is cycled.

Answer 1

Hi there,

The code P1388 indicates an issue with the ASD or CNG relay. Here is some info for this code.

P1388 JEEP - ASD or CNG Relay Control Circuit

Read more: https://www.autocodes.com/p1388_jeep.html

The code P1282 indicates an issue with the pump relay. Here is some info for this code.

P1282 JEEP - Fuel Pump Relay Control Circuit Condition

Read more: https://www.autocodes.com/p1282_jeep.html