P1389 Code - No Auto Shutdown Relay Voltage At Powertrain Control Module
Quick Answer
The P1389 code indicates that there is no auto shutdown relay voltage at the Powertrain Control Module (PCM) in the vehicle. Common causes include Faulty auto shutdown relay, Damaged wiring or connectors, Blown fuse related to the auto shutdown relay. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1389 indicates No Auto Shutdown Relay Voltage At Powertrain Control Module.
- Common causes
- Common causes include Faulty auto shutdown relay, Damaged wiring or connectors, Blown fuse related to the auto shutdown relay.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1389 Description
The P1389 code indicates that there is no auto shutdown relay voltage at the Powertrain Control Module (PCM) in the vehicle. This relay is responsible for cutting off power to the fuel pump and ignition system in case of an emergency or when the engine is turned off. When the PCM detects that there is no voltage coming from the auto shutdown relay, it triggers the P1389 code to alert the driver or technician of a potential issue.
Common Causes of P1389
- Faulty auto shutdown relay
- Damaged wiring or connectors
- Blown fuse related to the auto shutdown relay
- Malfunctioning PCM
- Corrosion or poor connections in the electrical system
Symptoms of P1389
- Engine cranks but does not start
- Engine stalls randomly
- Check Engine Light is illuminated
- Loss of power while driving
- Rough idle or misfires
How to Fix P1389
- Perform a visual inspection of the auto shutdown relay, wiring, and connectors to check for any visible damage or corrosion.
- Test the auto shutdown relay using a multimeter to verify if it is functioning properly.
- Check the related fuses and replace any that are blown.
- Test the voltage at the PCM to ensure that it is receiving power from the auto shutdown relay.
- If necessary, replace the auto shutdown relay, repair any damaged wiring or connectors, or reprogram the PCM if it is found to be faulty.
Cost to Fix P1389
The cost of repairing a P1389 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this issue could range from $100 to $300, including parts and labor. However, it is important to note that the actual cost could be higher if extensive diagnostics or repairs are required. It is recommended to consult with a qualified mechanic to get an accurate estimate based on the individual circumstances of the vehicle.
Need more information about the P1389 code?
Need more information on how to fix the P1389 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1389 code diagnosed by a professional: Find a repair shop in your area
Code P1389 Information for Specific Makes
- P1389 Audi — Engine Control Module 2 Defective
- P1389 Chrysler — No Auto Shutdown Relay Voltage At Powertrain Control Module
- P1389 Dodge — No Auto Shutdown Relay Voltage At Powertrain Control Module
- P1389 Ford — Glow Plug Circuit High Side Low Input
- P1389 Jeep — No Auto Shutdown Relay Voltage At Powertrain Control Module
- P1389 RAM — No Auto Shutdown Relay Voltage At Powertrain Control Module
- P1389 Volkswagen — Engine Control Module 2 Defective
Frequently Asked Questions about P1389 Code
No Frequently Asked Questions about P1389 Code found.
Discuss the causes and fixes for P1389 OBDII Code
Code P1389 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.