Control Module Input Power ‘A’ Circuit Intermittent/Erratic
Table of contents
U3503 CHEVROLET 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 U3503 CHEVROLET?
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 the U3503 CHEVROLET code
The cost of diagnosing the U3503 CHEVROLET 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.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
U3503 CHEVROLET 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.
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