DTC B1662/45 Indicator Light Circuit Malfunction: Description

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

The indicator light circuit consists of the center airbag sensor assembly and the combination meter. DTC B1662/45 is set when a malfunction is detected in the indicator light circuit.

DIAGNOSTIC TROUBLE CODE CHART

DTC No.	DTC Detecting Conditions	Trouble Areas
B1662/45	Center airbag sensor assembly detects line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in indicator light circuit for 2 seconds Indicator light circuit malfunction Center airbag sensor assembly malfunction	Combination meter Center airbag sensor assembly Instrument panel wire