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C1604 ECU(Brake System) Hardware error

AutoHex Online Help: Hyundai MATRIX(FC) 2002
INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODES

DTC No. C1604 ECU Hardware

(EEPROM and ECU failure)

Probable cause

The HECU always monitors the solenoid valve drive circuit. It determinesthat there is an open or short-circuit in the solenoid coil or in a harnesseven if no current flows in the solenoid or through the HECU.

Malfunction of wiring harness

Malfunction of hydraulic unit

Malfunction of HECU