P1389 — No Auto Shutdown (ASD) Relay Output Voltage At PCM

What Does P1389 Mean?

P1389 is a manufacturer-specific diagnostic trouble code: No Auto Shutdown (ASD) Relay Output Voltage At PCM. This code applies to DODGE, JEEP, PLYMOUTH, PONTIAC, FORD vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1389

⚠️ Check Engine Light (MIL) illuminated
⚠️ No Auto Shutdown (ASD) Relay Output Voltage At PCM not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty No Auto Shutdown (ASD) Relay Output Voltage At PCM
🔍 Wiring or connector issue in No Auto Shutdown (ASD) Relay Output Voltage At PCM circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1389 mean?

P1389 indicates: No Auto Shutdown (ASD) Relay Output Voltage At PCM. The vehicle's computer has detected that the No Auto Shutdown (ASD) Relay Output Voltage At PCM is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1389?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1389 for extended periods may cause additional problems.

How much does it cost to fix P1389?

Repair costs for P1389 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect No Auto Shutdown (ASD) Relay Output Voltage At PCM and related wiring
🔧 Replace faulty No Auto Shutdown (ASD) Relay Output Voltage At PCM

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1389: No Auto Shutdown (ASD) Relay Output Voltage At PCM