DTC B1374: Ignition 1 Fault (With Engine Running): Description

Circuit No. 439 (Pink wire) provides input from ignition switch to BFC. DTC B1374 will set when Ignition 1 is not active, and Ignition 3 is active for 20 seconds. See WIRING DIAGRAMS  . DTC B1374 can be cleared using scan tool, or history DTC will disappear after 100 ignition cycles if fault conditions do not reoccur.