Diagnostic Aid

This is an informational DTC set by the engine control module. It is set to provide an indication that the distance sensing cruise control module will not be able to perform as intended. Diagnose any other DTCs first.

Both DTCs P1553 and P15F6 can be set by the ECM against the distance sensing cruise control module if the battery voltage drops below 9 volts during a cranking condition. This is a result of the internal microprocessor in the distance sensing cruise control module resetting when subjected to a low voltage condition during cranking. Under this condition, the rolling count signal transmitted to the ECM for the distance sensing cruise control module freezes while the microprocessor is resetting. As a result of the rolling count signal freezing, the ECM may set DTCs P1553 and P15F6 and transition to history within 5 seconds. No driver information center (DIC) service messages or tell-tales will be displayed.