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FAULT CODE 222

Barometric Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source

Overview


CODE

REASON

EFFECT

Fault Code: 222

Barometric Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low

Power derate can occur depending on

PID:

Source. Low signal voltage detected at barometric pressure circuit.

application and calibration.

SPN: 108



FMI: 4/4



LAMP: Amber



SRT:



Barometric Pressure Sensor Circuit - Industrial Engi


Barometric Pressure Sensor Circuit - Power Generation and M


Circuit Description


The barometric pressure sensor is used by the engine control module (ECM) to monitor the barometric pressure. This value is one of many inputs used by the ECM to determine the correct air/fuel ratio for proper engine operation.


Component Location

The barometric pressure sensor is mounted on the main branch of the engine harness on the fuel pump side of the engine. Use the following procedure for a detailed component location view. Refer to Procedure 100-002 in Section E.


Shop Talk


The barometric pressure sensor shares supply and return wires in the engine harness with other sensors. Opens and shorts in the engine harness can cause multiple fault codes to be active. Before troubleshooting Fault Code 222, check for multiple faults.


Possible causes of this fault code include:


  • Signal circuit open or shorted to ground in the engine harness or sensor

  • Supply wire open or shorted to ground.


Refer to Troubleshooting Fault Code t05-222.


Last Modified: 28-Nov-2012

Copyright © 2000-2010 Cummins Inc. All rights reserved.

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