Intake manifold pressure

Last reviewed 2026-08-31

Description

Absolute pressure in the intake manifold (MAP). At idle it reflects engine vacuum; under boost it rises above atmospheric.

Unit

kPa

Group

ice

Protocol requests

The same meaning can arrive through different mode + PID + ECU header combinations. Do not merge by hex number alone.

• Intake manifold absolute pressure

  MAP sensor. Absolute pressure in the intake manifold.

  OBD · mode 01 · PID 0B · default header · primary

  Source label: Standard J1979 mapping