LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (8HP75 - DTCS P1D91-00 To U3002-00) >> DTC Troubleshooting >> P1DAB-00-Vehicle Speed Undetermined >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different variant/trim than selected.

The purpose of this diagnostic is to detect multiple rationality failures of the speed signals. A failure is detected if more than one of the Input Speed Sensor, Output Speed Sensor, or Wheel Speed Sensor signals is not rational.