U0424low severityNetwork
Invalid Data Received From HVAC Control Module
on 1997 Ford Thunderbird 5.0L V8 · FWD
What this code means
The network is receiving corrupted data from the HVAC control module. This can cause heating and air conditioning to work improperly.
Symptoms
- HVAC not responding
- Incorrect temperature output
- Climate display errors
Common causes
- Faulty HVAC control module
- Bus wiring or connector fault
- Corroded or loose connectors
- Software or programming error
Diagnostic steps
- Scan all modules for codes
- Check power and ground to HVAC module
- Inspect data bus wiring and connectors
- Review HVAC module live data with scan tool
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ANCEL AD410 →
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Serious DIY~$100
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Autel MaxiCOM MK808S →
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Autel MaxiSys MS906 Pro →
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Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus