DTC C1202-00: Master Reservoir Level Malfunction [11/2021 - 03/2024]: Description

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If the No. 2 skid control ECU (brake actuator assembly) detects that the brake fluid level is low or there is an open in the brake fluid level warning switch signal circuit, DTC C1202-00 is stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Note
C1202-00	Master Reservoir Level Malfunction	Either of the following is detected: The brake fluid level warning switch signal circuit is open for a certain period of time. The reservoir level is low for a certain period of time.	Open or short in brake fluid level warning switch (brake booster with master cylinder assembly) Brake fluid leaks Open or short in wire harness Low brake fluid No. 1 skid control ECU (brake booster with master cylinder assembly)	Comes on	Brake/EPB	SAE Code: C1202 Output ECU: Both skid control ECUs HINT: DTC C1202-00 is cleared when the conditions return to normal.