DTC P1671 Or P1672: A/T FI Signal "B" (No Signal Or Failure)

If the scan tool indicates DTC P1671, No signal in the A/T FI data line "B" condition may exist. If scan tool DTV P1672, a failure in the A/T FI data line "B" may exist. See Fig 1 and Fig 2 .

Fig 1: A/T FI Data Line "B" (No Signal Or Failure) Diagnostic Flow Chart (1 Of 2)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: A/T FI Data Line "B" (No Signal Or Failure) Diagnostic Flow Chart (2 Of 2)

Courtesy of AMERICAN HONDA MOTOR CO., INC.