C1581 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1581 – Assist Map Number Un-Writing


C1581 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1581 Possible Causes


Faulty Power Steering ECU,Power Steering ECU harness is open or shorted,Power Steering ECU circuit poor electrical connection


C1581 Description


The Power Steering ECU assy outputs this Diagnostic Trouble Code (DTC) when it determines that assist map is not written in the ECU. It is necessary to replace the Power Steering ECU assy when this code is output because this malfunction cannot be repaired.