3126B and 3126E On-highway Engines Caterpillar


0102-07 Boost Pressure not responding

Usage:

3126B 1AJ
Conditions Which Generate This Code:

The boost pressure is higher than the boost pressure that is required for normal operating conditions.

Note: The diagnostic code indicates a mechanical problem. The ECM and the electronic control system is operating correctly.

System Response:

Boost pressure is set to 0 kPa (0 psi). "DIAG" will be displayed next to the status for "Boost Pressure" on the Caterpillar Electronic Technician (ET). The check engine lamp will illuminate.

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

Test Step 1.

The diagnostic code indicates a problem with the turbocharger, the wastegate, or a pinched turbocharger line. The diagnostic code does not indicate a problem with the ECM or the electronic control system.

Results:

  • OK - STOP

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