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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brakes (Abs) - DTCS C0010-01 To C104A-02 >> DTC Troubleshooting >> C0031-29-Left Front Speed Sensor - Invalid >> Possible Causes

Possible Causes

Possible Causes
IMPROPER LEFT FRONT TIRE PRESSURE/MISMATCHED TIRES
CHECK LEFT FRONT WHEEL SPEED SENSOR FOR LOOSENESS
INSPECT CIRCUITS/CONNECTOR/TERMINALS FOR DAMAGE
LEFT FRONT WHEEL BEARING AND HUB OR ENCODER FOR DAMAGE
LEFT FRONT WHEEL SPEED SENSOR
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  STANDARD PROCEDURE  .