P1DEB FIAT – Incorrect Gear Displayed Due To Incorrect Gear Ratio

P1DEB FIAT Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1DEB FIAT Possible Causes

Faulty Transmission Control Module (TCM),Transmission Control Module (TCM) harness is open or shorted,Transmission Control Module (TCM) circuit poor electrical connection

P1DEB FIAT Description

The purpose of the diagnostic is to ensure that N is displayed to the driver when a ratio monitoring failure requires a limp-in action in neutral position.