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DTC B2271: Ignition Hold Monitor Malfunction: Description

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 source control ECU, a short in the IG output circuit inside the power source control ECU, a short between the power source control ECU and relay, or a short in the relay is detected.

HINT: 

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC No. DTC Detection Condition Trouble Area
B2271 Hold circuit, IG1 relay actuation circuit or IG2 relay actuation circuit inside power source control ECU is open or shorted
  • AM2 fuse
  • Power source control ECU
  • Wire harness or connector
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