Engine-Codes - Generic - U3500

U3500 - Control Module Input Power 'A' Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U3500 Possible Causes

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

How is the U3500 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 U3500 code

Labor: 1.0

The cost to diagnose the U3500 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.
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Possible Symptoms

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

U3500 Meaning

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.

More Information

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Information for specific makes

  • U3500 BUICK Control Module Input Power 'A' Circuit Range/Performance
  • U3500 CADILLAC Control Module Input Power 'A' Circuit Range/Performance
  • U3500 CHEVROLET Control Module Input Power 'A' Circuit Range/Performance
  • U3500 GMC Control Module Input Power 'A' Circuit Range/Performance

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