DTC code

B1278: MICU headlight switch position circuit malfunction

Vehicle-specific published guides for this diagnostic trouble code.

MICU headlight switch position circuit malfunction

B1278 may mean the MICU is seeing a headlight switch position input that does not match the expected switch state.

Article vehicle: 2010-2017 Honda Accord 2.4 Gas

B1278 may indicate that the MICU/body electrical lighting system is not seeing the headlight switch position circuit as expected.

Article vehicle: 2010-2015 Honda Civic 1.8 Gas