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B101B4A — Crash sensor in lock carrier on front passengerʼs side - part number implausible
Crash sensor in lock carrier on front passengerʼs side - part number implausible. The Taycan, 911 (992), Panamera (971), Panamera (972) and Cayenne report this code; below is which control unit sets it on each model and how to read and clear it.
Which models and control units set B101B4A
How to read and clear B101B4A
- Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
- Open STEUER14, pick your car and run a fault scan: every control unit is read, and B101B4A shows with its status, its full description and the freeze frame when the unit stores one.
- Fix the cause first, then clear the fault memory and scan again to check it stays away. Reading and clearing fault codes is free on every control unit.
More about fault memory in the manual →
Download STEUER14 — free fault readingOther codes of the Airbag
| B101B01 | Crash sensor in lock carrier on front passengerʼs side - electrical fault |
| B101B04 | Crash sensor in lock carrier on front passengerʼs side faulty |
| B101B11 | Crash sensor for front passenger-side lock carrier - short circuit to ground |
| B101B12 | Crash sensor for front passenger-side lock carrier - short circuit to B+ |
| B101B13 | Crash sensor in lock carrier on front passengerʼs side - open circuit |
| B101B29 | Crash sensor on front passenger-side lock carrier - signal implausible |
| B101C00 | Belt buckle switch on front driverʼs side – equipment fault |
| B101C01 | Belt buckle switch on front driverʼs side - short circuit to another line |
| B101C07 | Belt buckle switch on front driver’s side - mechanical fault |
| B101C11 | Belt buckle switch on front driverʼs side – short circuit to ground |
| B101C12 | Belt buckle switch on front driverʼs side – short circuit to B+ |
| B101C13 | Belt buckle switch on front driverʼs side – open circuit |
All 723 codes of this control unit →
Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.