Note On Intermittents

WARNING: This page is about a different car, the 1995 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

This code sets due to a false start condition which engine speed exceeds 568 RPM but does not start.

Fig 1: Code P053 Schematic, 4X Reference Signal Interrupt From Ignition Control Module

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code P053 Diagnostic Flow Chart, 4X Reference Signal Interrupt From Ignition Control Module

Courtesy of GENERAL MOTORS CORP.