Engine-Codes - Jeep - P1388 JEEP

P1388 JEEP - ASD or CNG Relay Control Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1388 JEEP Possible Causes

  • Faulty ASD Relay
  • Faulty CNG Relay
  • ASD or CNG Relay harness is open or shorted
  • ASD or CNG Relay circuit poor electrical connection
  • ASD or CNG Relay poor ground or supply voltage condition

How is the P1388 JEEP code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P1388 JEEP code

Labor: 1.0

The cost to diagnose the P1388 JEEP code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

ECM commanded on the ASD or CNG relay and detected an open or shorted condition

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1388 JEEP Meaning

ASD or CNG Relay Control Circuit is the generic description for the P1388 Jeep code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information abouth the P1388 Jeep OBDII code.

Still have questions? Please post your question on our Comments Section of the main page for more information.

More Information

Need more information on how to fix the P1388 JEEP code?
Get Access to Factory Service Manuals

Need more help?

Get the P1388 Jeep code diagnosed by a professional: Find a repair shop in your area