U3502
Control Module Input Power A Circuit High
U3502 is an OBD-II diagnostic trouble code meaning: Control Module Input Power A Circuit High. Common causes: faulty generator, problems with the voltage regulator. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Power dips
- Check Engine Light Is On
- Malfunctions of electronic systems
- Disabling control modules
Causes
- Faulty generator
- Problems with the voltage regulator
- Short circuit in power supply
- Oxidized or damaged contacts
- Control module malfunction
How to Fix
- Check the generator voltage at idle and under load
- Check voltage regulator
- Inspect the power circuit for damage
- Check contacts and connections in the power supply circuit
- Test the control module
Related codes
Error U3502 by Vehicle Brand
FAQ
What does the U3502 code mean?
U3502 is an OBD-II diagnostic trouble code that indicates: Control Module Input Power A Circuit High
What causes a U3502 error code?
The most common causes of U3502 include: Faulty generator; Problems with the voltage regulator; Short circuit in power supply; Oxidized or damaged contacts.
How do I fix a U3502 diagnostic trouble code?
To fix U3502: Check the generator voltage at idle and under load. Check voltage regulator. Inspect the power circuit for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3502?
Limited driving only, diagnose soon
How much does it cost to fix U3502?
The estimated repair cost for U3502 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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