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AutoCodes - Generic - U3509

U3509 Code - Control Module Supply Circuit 3 Low Voltage

- Code Popularity: 817 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By - Updated Jun 18, 2020
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|U3509 code possible causes

  • Faulty Control Module setting the code
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

|How do I fix code U3509 code?

Check 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.

|Cost of diagnosing U3509 code

Labor: 1.0

The cost of diagnosing the U3509 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are U3509 code possible symptoms?

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

|U3509 code description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. With the ignition is ON, the Diagnostic Trouble Code (DTC) will set when the control module or sensor detects a system voltage of less than approximately 9 V for approximately 5 s.

OBDII Code U3509 - Control Module Supply Circuit 3 Low Voltage -
U3509 Code - Control Module Supply Circuit 3 Low Voltage

|Need more information with the U3509 code?

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|Information for specific makes

|Need help with a U3509 code?

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|U3509 code comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the U3509 code? Have you replaced any parts?
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