U350EControl Module Cooling Fan Circuit High
- Generic OBD-II code · Network
- How the car detects it
- U350E points to a fan circuit whose level is higher than the module expects, typically because the control or feedback line is shorted to battery voltage or the output stage is stuck on. Unlike the low and open faults, the fan may then run all the time, even with the module cold or the car parked, which is audible and can drain the 12 V battery. Fan-cooled electronics are found in infotainment units such as the central unit of the Karma Revero (TB-24-94-01) and in on-board chargers; CARB treats electrical cooling outputs for inverters and batteries as monitored components. U350E is not documented by any manufacturer in public. Check the harness for chafing against supply wires before suspecting the module.
- What you may notice
- Module fan running continuously, also after switch-off
- 12 V battery discharged after standing
- Fan does not react to temperature changes
- Likely causes
- LikelyFan control or feedback wire shorted to a 12 V supply
- PossibleFan output stage in the module stuck on
- RareMoisture or corrosion bridging pins in the fan connector
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.