U3509 - Control Module Supply Circuit 3 Low Voltage
U3509 Possible Causes
- Faulty Control Module setting the code
- Control Module harness is open or shorted
- Control Module circuit poor electrical connection
How is the U3509 code repair?Start by checking 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 U3509 code
Labor: 1.0The cost to diagnose the U3509 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
How much do you know about cars?
Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge
- Engine Light ON (or Service Engine Soon Warning Light)
U3509 MeaningThe 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.
More InformationNeed more information on how to fix the U3509 code?
Get Access to Factory Service Manuals