Power Supply Voltage High
Table of contents
U12B1 INFINITI Possible Causes
- Faulty Audio and Video (AV) Control Unit
- AV Control Unit harness is open or shorted
- AV Control Unit circuit poor electrical connection
How do I fix code U12B1 INFINITI?
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 U12B1 INFINITI code
The cost of diagnosing the U12B1 INFINITI 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)
U12B1 INFINITI Description
The Diagnostic Trouble Code (DTC) sets when the Audio and Video (AV) Control Unit supply voltage exceeds upper limits.
