DTC P1440 Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 1; DTC P1443 Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2: Description
Refer to DTC P0412 (See .
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P1440 | AIV1 terminal voltage becomes less than half of the +B voltage while the VSV for air injection system is not operating (1 trip detection logic) |
|
| P1443 | AIV2 terminal voltage becomes less than half of the +B voltage while the VSV for air injection system is not operating (1 trip detection logic) |
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