DTC C1391: Abnormal Leak in Accumulator [10/2020 - 10/2023]: Description
This DTC is stored if internal or external brake fluid leaks are detected due to improper sealing in the brake actuator assembly. Internal leaks are suspected if the pump motor operates frequently without braking.
| DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|---|
| C1391 | Abnormal Leak in Accumulator | 591 | Either of the following is detected:
|
|
Does not come on | - |
DTC DETECTION CONDITIONS: C1391 INF CODE: 591
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | Before braking and while the pump motor is operating | ◦ | - |
| Before braking and while the pump motor is not operating | - | ◦ | |
| Malfunction Status | The accumulator pressure sensor input does not rise | ◦ | - |
| The proportional drop in the accumulator pressure sensor input exceeds the standard value | - | ◦ | |
| Detection Time | - | - | |
| Number of Trips | 1 trip | 1 trip | |