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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 103 (Electronically Controlled Brake System - Diagnostic Codes (C1202-C1300) (Hybrid)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1202: Master Reservoir Level Malfunction [04/2018 -] >> Description

DTC C1202: Master Reservoir Level Malfunction [04/2018 -]: Description

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DTC No. Detection Item INF Code DTC Detection Condition Trouble Area MIL Note
C1202 Master Reservoir Level Malfunction 1126 Either of the following is detected:
  1. The brake fluid level warning switch signal circuit is open for a certain period of time.
  2. 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
  • Skid control ECU (brake booster with master cylinder assembly)
Comes on
  • INF Code 1126: SAE Code C1202
  • Electronically controlled brake system DTC
HINT: DTC C1202 (INF code 1126) is cleared when the conditions return to normal.