DTC 53: Diagnostic Monitor Internal Fault
DIAGNOSTIC TROUBLE CODE 53Internal Diagnostic Monitor Failure
Normal Operation
The diagnostic monitor performs several on-board diagnostics every time the ignition switch is turned on. If any of these tests fail, the diagnostic monitor will flash Diagnostic Trouble Code 53.
Possible Cause
1. Internal diagnostic monitor on-board diagnostic failure.
Pinpoint Tests 53-1 - 53-2:
