DTC P2227: General Description

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

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

The barometric pressure (BARO) sensor is built into the powertrain control module (PCM), and it monitors atmospheric pressure. The PCM estimates appropriate intake airflow from the manifold absolute pressure (MAP) sensor output voltage and the BARO sensor output voltage. If the BARO sensor output voltage is a specified value or less, the PCM detects a malfunction and stores a DTC.