Home › Land Rover › 2016 › LR4 Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Anti-Lock Brake System Control Module (Abs) -- LR4/L319 › Diagnostic Trouble Code Index DTC: Anti-Lock Brake System Control Module (ABS) › Description And Operation › DTC C0031-2F: Left Front Wheel Speed Sensor - Signal erratic › Possible Causes