Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Hyundai Genesis 5.0FACTORY OEM SERVICE PROCEDURE
Head Unit DTCS
HEAD UNIT DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
| DTC U1000 | Head Unit ECM Error |
| DTC U1003 | Temperature Sensor Signal Error in Head Unit |
| DTC U1006 | Low Voltage Detected |
| DTC U1007 | High Voltage Detected |
| DTC U1500 | Wakeup Line Short Circuit To Ground |
| DTC U1501 | Wakeup Line Short Circuit To VCC |
| DTC U1540 | Wakeup Line Test Failed at Amplifier Unit |
| DTC U1900 | GPS Antenna Line Break |
| DTC U1920 | DVD Drive Error |
| DTC U1940 | Front Display SDC Communication Error |
| DTC U1942 | Rear Display SDC Communication Error |
| DTC U1970 | Multimedia CAN Bus Off Error |
| DTC U1971 | Multimedia CAN Single Line Error |
| DTC U1972 | Multimedia CAN Limp Home Status |
| DTC U1980 | Timeout Multimedia CAN Message (Air Conditioner, Cluster, Audio) |
| DTC U1981 | Timeout Multimedia CAN Message (Vehicle Speed) |
| DTC U1982 | Timeout Multimedia CAN Message (Body CAN Signal - Camera, ECS, Trip Computer, Alternator, Auto Light) |
| DTC U1983 | Timeout Multimedia CAN Message (Trip Computer) |
| DTC U1984 | Timeout Multimedia CAN Message (Inhibitor Signal) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.