C1018 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1018 – Regenerative Braking Calibration/Parameter Memory Failure


C1018 Possible Symptoms


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


C1018 Possible Causes


Diagnostic Trouble Codes (DTCs) present in ABS module,Wiring, terminals or connectors,Vacuum leak,Battery undervoltage (less than 9 volts),Battery overvoltage (greater than 16.9 volts),Brake pedal application,Brake booster vacuum sensor,Vacuum pump,Brake pedal angle sensor,Brake booster travel sensor


C1018 Description


The ABS module is the main control module for the braking system including the regenerative brake system. When a new ABS module and HCU assembly are installed on a vehicle, several calibration routines must be performed using a diagnostic scan tool for the brake system to operate correctly. Certain criteria must be met for each calibration routine to complete successfully. If a calibration routine fails to complete there is a Parameter Identification (PID) in the ABS module that aids in identifying the concern that caused the routine to fail.