DTC code

B1129: B1129 Diagnostic Guide

Vehicle-specific published guides for this diagnostic trouble code.

B1129 Diagnostic Guide

B1129 may indicate that the MICU is seeing a driver's door lock knob switch input problem where lock and unlock signals can appear active together.

Article vehicle: 2010-2017 Honda Accord 2.4 Gas

B1129 may indicate that the MICU is seeing an implausible driver's door lock knob switch input for the lock and unlock circuits.

Article vehicle: 2010-2015 Honda Civic 1.8 Gas

B1129 may indicate that the driver’s door lock knob switch input is being interpreted abnormally by the power window master switch.

Article vehicle: 2016-2024 Honda Civic 1.5TurboGas

B1129 may indicate that the driver's door lock knob switch signal is not being interpreted correctly by the power window master switch.

Article vehicle: 2020-2025 Honda Cr V 2.0Hybrid