CUSTOMER CONCERN After brake-booster replacement, the ABS module stores hard DTCs C0022 and C1018. CAUSE Confirmed fault in the brake booster vacuum sensor wiring disturbed during booster replacement. CORRECTION Repair the brake booster vacuum sensor wiring, perform the ABS multicalibration routine, clear DTCs C0022 and C1018, and verify brake-system operation.

CUSTOMER CONCERN The ABS and traction-control warning lights remain on, and DTC C1018 will not clear. CAUSE The brake-control calibration was incomplete, leaving the ABS module without the required learned values. CORRECTION Perform the factory scan-tool brake and ABS relearn procedure.