DTC C1202: Master Reservoir Level Malfunction [02/2019 - 12/2021]: Description

When a fluid level drop in the brake master cylinder reservoir assembly is detected, a signal is sent to the skid control ECU (brake booster with master cylinder assembly).

If a DTC for the fluid level drop is stored, the warning will be canceled and the DTC will be cleared when the fluid level returns to normal.

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	Note
C1202	Master Reservoir Level Malfunction	371 -	INF Code: 371 An open is detected in the switch signal circuit for 2 seconds or more. INF Code: - The reservoir level remains low.	INF Code: 371 Brake fluid level warning switch (Brake master cylinder reservoir assembly) internal open circuit Open in wire harness Skid control ECU (Brake booster with master cylinder assembly) INF Code: - Low brake fluid level Brake fluid leaks Brake fluid level warning switch (Brake master cylinder reservoir assembly) internal short circuit Short in wire harness Brake disc rotor excessive wear Skid control ECU (Brake booster with master cylinder assembly)	-