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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 327 (Cruise Control System) >> Diagnostic Tests >> DTC P1566: Powertrain Control Module Detects High Engine Speed >> Diagnostic Aids
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Diagnostic Aids

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

This Diagnostic Trouble Code (DTC) is an information DTC only. The DTC indicates the reason that the PCM disabled the cruise control system. Be sure to verify the conditions that set the DTC with the customer.

Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may assist in diagnosing the condition. This information may help determine how often the condition that set the DTC occurred.