Calculated engine load

Last reviewed 2026-08-31

Description

How hard the engine is working as a percentage of its maximum capacity. It is not the same as throttle position or actual torque.

Unit

%

Group

ice

Protocol requests

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

• Calculated engine load

  Normalised engine load as defined by J1979. It is not throttle position and not a direct torque reading.

  OBD · mode 01 · PID 04 · default header · primary

  Source label: Standard J1979 mapping