B0341HVAC Heated Seat Driver Circuit
- Generic OBD-II code · Body
- How the car detects it
- B0341 is not backed by any known J2012 list or carmaker text, and it covers the same ground as B0335. The HVAC prefix fits cars whose climate control module also runs the seat heaters. Saab's 9-3 is one: its climate module drives the left seat heater and reads a seat temperature sensor; B1927 02 (input below 0.2 V) switches the left heater off, and B2429 06 reports an open element. US6252208B1 shows such a set-up, where an NTC sensor in the seat forms a voltage divider whose tap the controller reads to regulate heating current. The mats are the same as with a separate seat heating module; what differs is the module that owns the output and sets the code.
- What you may notice
- Driver seat heating dead while climate control works
- Heating starts but stops after a short time
- Likely causes
- LikelyDriver heating mat open circuit
- PossibleSeat temperature sensor shorted or open so heating is blocked
- PossibleLong harness from climate module to seat damaged at the seat rail
- RareSeat heater output in the climate control module failed
- Repair
- Medium · Often possible to do yourself.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.