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DTC B2273 Ignition 2 Monitor Malfunction: Description

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is output when a malfunction occurs in the IG2D output circuit, which is between the ignition relay No. 2 (IG2) actuation circuit inside the main body ECU and the ignition relay No. 2 (IG2)

DTC DETECTION CONDITION AND TROUBLE AREA

DTC Code Detection Condition Trouble Area
B2273 Ignition relay No 2 (IG2) actuation circuit inside main body ECU or other related circuit is malfunctioning
  • Main body ECU
  • Ignition relay No 2 (IG2)
  • Harness or connector