DTC Advanced Diagnostics: P034B: General Description

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

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

The crankshaft position (CKP) sensor consists of a rotor and a semiconductor that detects rotor position. When the engine starts, the rotor turns and the magnetic flux in the semiconductor device changes. The changes of magnetic flux are converted into pulsing signals to the powertrain control module (PCM). The CKP sensor detects injection/ignition timing for each cylinder and engine speed. At the timing of starter on, the PCM determines a backward of the crankshaft. If the PCM detects a backward rotation of the crankshaft during the ON of the starter, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type