DTC B1021-29 Alfa Romeo

Signal Of Rear Axle Sensor Invalid (Electrical Error) - Signal Signal Invalid

Signal Of Rear Axle Sensor Invalid (Electrical Error) - Signal Signal Invalid

Description

When the Adaptive Front Lighting System (AFLS) Module detects less than 0.2 volts or greater than 4.7 volts on the Headlamp Leveling Sensor Rear Signal circuit for greater than one second.
Failure Type:
Signal Invalid

Video Guide

Duration: PT4M14S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: B1021-29
  • Brand: Alfa Romeo
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