DTC B2271: Ignition Hold Monitor Malfunction: Description
WARNING: This page is about a different car, the 2011 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is stored when a problem such as an open in the AM2 fuse, an open or short in the wire harness between the fuse and power management control ECU, a short in the IG output circuit inside the power management control ECU, a short between the power management control ECU and relay, or a short in the relay is detected.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2271 | The hold circuit, IG1 relay actuation circuit or IG2 relay actuation circuit inside the power management control ECU is open or shorted. |
|