U3509 Code - Control Module Supply Circuit 3 Low Voltage

     

Code U3509 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 the Code U3509?

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.

What is the Cost to Diagnose the Code U3509?

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 Code U3509 Possible Symptoms?

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

Code U3509 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.

Need More Information on the U3509 Code?

Need more information on how to fix the U3509 code? Get Access to Factory Service Manuals

Information for Specific Makes

• U3509 Buick Control Module Supply Circuit 3 Low Voltage
• U3509 Cadillac Control Module Supply Circuit 3 Low Voltage
• U3509 Chevrolet Control Module Supply Circuit 3 Low Voltage
• U3509 GMC Control Module Supply Circuit 3 Low Voltage

Need Help with the U3509 Code?

Get the U3509 code diagnosed by a professional: Find a repair shop in your area

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