DTC B2274 ACC Monitor Malfunction: Description
WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is output when a malfunction is occurring in the ACC output circuit, which is from the ACC relay actuation circuit inside the power source control ECU to the ACC relay.
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2274 | ACC relay actuation circuit inside power source control ECU or other related circuit is malfunctioning |
|