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Home >> Buick >> 2004 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (DTC P0506 To P1640) >> Engine Controls Diagnosis >> DTC P1381 >> Test Description
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Test Description

The number below refers to the step number on the diagnostic table.

  1. 1:  This step will diagnose a malfunction in the serial data circuits.
DTC P1381

Step Action Yes No
1  Did you perform the Diagnostic System Check-Engine Controls? Go to Diagnostic System Check - ABS in Anti-lock Brake System Go to Diagnostic System Check - Engine Controls
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