B1A26 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1A26 – Maximum Number Of Keys Programmed


B1A26 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1A26 Possible Causes


Maximum Number Of Keys Programmed,Faulty Wireless Control Module (WCM)


B1A26 Description


When a key is inserted in the ignition switch and is turned to the Run/Start position, the Wireless Control Module (WCM) performs a self-test and re-synchronization routine. During this routine, the WCM interrogates the key, performing various validity and performance tests. The OBDII Code P1A26 is set when the maximum number of keys (eight) have been programmed into the Wireless Control Module (WCM).