DTC Advanced Diagnostics: P0116: General Description

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

Engine coolant temperature (ECT) sensor 1 is used for air/fuel ratio feedback control, ignition timing control, idle speed control, and other functions. The powertrain control module (PCM) monitors the minimum and maximum values of ECT sensor 1 after the engine start. If the difference between the minimum value and the maximum after the engine start is small, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type