P2228

DTC P2228 Barometric Pressure (BARO) Sensor Circuit Low Voltage

Circuit Description

The barometric pressure (BARO) sensor is installed inside of the ECM and converts the BARO into a voltage signal. The ECM uses this voltage signal to calibrate the fuel injection quantity and injection timing for altitude compensation. If the ECM detects an excessively low signal voltage this DTC will set.

Condition for Running the DTC

^ DTC P2229 is not set.
^ The battery voltage is more than 7 volts.
^ The ignition switch is ON.
^ The engine is running.

Condition for Setting the DTC

^ The ECM detects that the BARO sensor signal voltage is less than 1.5 volts for 1 second.

Action Taken When the DTC Sets

^ The ECM illuminates the MIL when the diagnostic runs and fails. Refer to DTC Type Definitions for Action Taken When the DTC Sets - Type A.
^ The ECM uses a BARO substitution of default value.
^ The ECM limits fuel injection quantity.
^ The ECM inhibits EGR control.
^ The ECM inhibits turbocharger control.
^ The ECM inhibits DPF regeneration control.
^ The ECM inhibits cruise control.

Condition for Clearing the DTC

^ Refer to DTC Type Definitions for Condition for Clearing the MIL/DTC - Type A.

Circuit/System Testing DTC P2228