DTC Advanced Diagnostics: P0154: General Description

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

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

The element impedance of front air/fuel ratio (A/F) sensor (bank 2, sensor 1) is monitored to determine whether front A/F sensor (bank 2, sensor 1) is active or not. The element temperature can be derived from the element impedance, and it is used for the malfunction detection. If the element temperature of front A/F sensor (bank 2, sensor 1) does not reach to a certain value after certain duration has passed since the heater is on, the powertrain control module (PCM) detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type