B198B Code: Meaning, Causes, and Symptoms | OBD2 Codes
B198B – All Door Secondary Unlock Control Circuit High
B198B Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
B198B Possible Causes
Faulty Door Secondary Unlock Relay,Door Secondary Unlock Relay harness is open or shorted,Door Secondary Unlock Relay circuit poor electrical connection,Faulty Totally Integrated Power Module (TIPM)
The Totally Integrated Power Module (TIPM) monitors the Door Secondary Unlock Control Circuit. When the Secondary Unlock Low Side Driver circuit does not change from high to low for over 10 seconds., this code will set.