B22A9 Code: Meaning, Causes, and Symptoms | OBD2 Codes
B22A9 – ECU Internal Performance Radio Frequency Module
B22A9 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
B22A9 Possible Causes
Faulty Radio Frequency Hub (RF-HUB) Module,Radio Frequency Hub (RF-HUB) Module harness is open or shorted,Radio Frequency Hub (RF-HUB) Module circuit poor electrical connection
The Radio Frequency Hub (RF-HUB) performs an internal self test. The repair of this fault condition does not involve any external circuitry and centers on verifying the integrity of the internal circuitry and software validity.