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.
2011 Hyundai Genesis 3.8FACTORY OEM SERVICE PROCEDURE
Controller
DIAGNOSTIC TROUBLE CODES
| DTC | Description |
|---|---|
| B1204 | Air Mix Potentiometer Open (Low)-Passenger |
| B1205 | Air Mix Potentiometer Short (High)-Passenger |
| B1208 | Intake Potentiometer Open (Low) |
| B1209 | Intake Potentiometer Short (High) |
| B1233 | In-Car Temperature Sensor Short (Low) |
| B1234 | In-Car Temperature Sensor Open (High) |
| B1237 | Ambient Temperature Sensor Short (Low) |
| B1238 | Ambient Temperature Sensor Open (High) |
| B1241 | Evaporator Sensor Short (Low) |
| B1242 | Evaporator Sensor Open (High) |
| B1245 | Air Mix Potentiometer Open (Low)-Driver |
| B1246 | Air Mix Potentiometer Short (High)-Driver |
| B1249 | Direction Potentiometer Open (Low)-Driver |
| B1250 | Direction Potentiometer Short (High)-Driver |
| B1257 | AQS Sensor Open |
| B1258 | AQS Sensor Short |
| B1259 | AQS Sensor Fault |
| B1275 | Air Mix Potentiometer-VENT Open (Low)-Console |
| B1276 | Air Mix Potentiometer VENT Short (High)-Console |
| B1277 | Air Mix Potentiometer-TEMP Open (Low)-Console |
| B1278 | Air Mix Potentiometer-TEMP Short (High)-Console |
| B1279 | Air Mix Switch Potentiometer Open (Low)-Console |
| B1280 | Air Mix Switch Potentiometer Short (High)-Console |
| B1281 | Humidity Sensor Short (Low) - AUTO Defog |
| B1282 | Humidity Sensor Open (High) - AUTO Defog |
| B1283 | Direction Potentiometer Open (Low) - AUTO Defog |
| B1284 | Direction Potentiometer Short (High) - Auto Defog |
| B1285 | Direction Control Motor - AUTO Defog |
| B1672 | APT Sensor Fault - CAN Signal |
| B1686 | Vehicle Speed Sensor Fault - CAN Signal |
| B1687 | Engine Coolant Temperature Sensor Circuit - CAN Signal |
| B2406 | Air Mix Motor-Driver |
| B2408 | Intake Motor |
| B2409 | Direction Control Motor-Driver |
| B2415 | Air Mix Door Motor-Passenger |
| B2447 | Air Mix Motor VENT-Console |
| B2448 | Air Mix Motor TEMP-Console |
Factory Service Tools
Use the Manual With the Right Hardware
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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.