OBD-II Diagnostic Trouble Code
B0409
Air Mix Door #1 Range Error
B
Body
comfort / safety
comfort / safety
0
Generic
SAE standard
SAE standard
4
Body subsystem
09
Air Mix Door #1 Range Error
Severity · general guide
Varies
Body/safety — depends on system
Code type
Generic
System
Body
Standard
ISO/SAE Controlled
Fault type
General