B2278 Code: Meaning, Causes, and Symptoms | OBD2 Codes
B2278 – Steering Shaft Torque Sensor Malfunction
B2278 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
B2278 Possible Causes
Faulty Steering Column,Steering Column harness is open or shorted,Steering Column circuit poor electrical connection
The voltage required for correct Electronic Power Assist Steering (EPAS) system operation is 10-16 volts. Above or below that voltage range the OBDII codes will be set. The EPAS motor, torque sensor and steering shaft/wheel position sensor are all integrated into the Power Steering Control Module. The Power Steering Control Module is integrated into the Steering Column. If any new components need to be installed, a new steering column must be installed.