M6 Auc 4s0101 [exclusive] May 2026

It looks like you’re referencing a string that could be a product code, part number, lot identifier, or internal reference — possibly from a database, inventory system, or electronics component (e.g., M6 could be a thread size, “Auc” might be auction/auction code, “4s0101” could be a batch/serial format).

Installation: It is generally considered a straightforward replacement for those comfortable with basic automotive maintenance. Availability and Pricing This sensor is available from several reputable retailers: M6 Auc 4s0101

Exhaust Odors in Cabin: If the sensor fails, the HVAC system may remain in "Fresh Air" mode even in high-pollution areas, allowing smells to enter the car. It looks like you’re referencing a string that

Detection Capabilities: The sensor monitors for specific harmful substances in the exhaust of nearby vehicles, primarily hydrocarbons (HC) and carbon monoxide (CO). Part within a family: 4s = 4-pin surface-mount device (e

Verdict

Rating: 8/10

HVAC Errors: A faulty sensor can trigger "AUC Sensor" error codes when scanned with BMW diagnostic tools like ISTA or INPA.

• Part within a family: 4s = 4-pin surface-mount device (e.g., a crystal oscillator or voltage regulator); 0101 = date code (week 1 of year 2001? Or Jan 1st batch?).
• Mechanical part: 4s = 4-start thread (rare for M6, but possible in lead screws), 0101 = drawing version 1.1.