3126B and 3126E On-highway Engines Caterpillar


0108-03 Barometric Pressure voltage high (26)

Usage:

3126B 1AJ
Conditions Which Generate This Code:

The atmospheric pressure signal voltage is above the acceptable range.

System Response:

Electronic System Response Atmospheric pressure is set to 100 kPa (15 psi).

Service Tool Display or Lamps Caterpillar Electronic Technician (ET) will indicate 100 kPa (15 psi) and display "DIAG" next to "Atmospheric Pressure" on the status screen while the diagnostic code is active. The Check Engine Lamp will illuminate.

Engine Response The engine may experience low power when the diagnostic code is active.

Test Step 1. Perform the following diagnostic procedure: Engine Pressure Sensor Open or Short Circuit - Test

Results:

  • OK - STOP

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