FixVault

DTC B1221 Power Window Switch Circuit on Driver Door: Description

This DTC is output when any of the switches on the power window regulator master switch assembly is operated.

HINT:

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
B1221 Power window switch or door control switch on power window master switch is operating
  • Power window regulator master switch assembly
  • Multiplex network door ECU front LH (driver door ECU)
  • Wire harness