Fault Code U0434
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0434
Invalid Data Received From Control Module (HVAC Control Module)
This code indicates that invalid data was received from the HVAC (Heating, Ventilation, and Air Conditioning) Control Module. This fault can impair the function of the vehicle's heating, ventilation, and cooling system.
Part Details
Part Name
HVAC Control Module
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪500 - ₪1,800
Engine Location
Instrument Cluster
Symptoms
- AC/heater not working
- Improper temperature control
- Blower fan stuck at one speed
- Weak airflow
Possible Causes
- 1Control module fault
- 2Faulty temperature sensors
- 3Wiring or connector issues
- 4CAN network interference
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