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OBD-II Code Jeep

P1388 — Jeep — Auto Shutdown (ASD) Relay Control Circuit

The PCM detects a fault in the ASD relay control circuit.

Brand Jeep
System Electrical System
Severity Critical
Safe to drive? Not recommended
Advanced scanner Yes

What does code P1388 mean on Jeep vehicles?

The PCM detects a fault in the ASD relay control circuit.

Common symptoms

  • No start
  • sudden stalling

Possible causes

  • Faulty ASD relay
  • damaged wiring
  • PCM

Initial recommendation

Check ASD relay and electrical circuit.

Safety notice

This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.

Analyze this code with MecaOBD

Use the app to combine Jeep code P1388 with your vehicle's actual symptoms for more complete diagnostic guidance.

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