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B197904 — Crash sensor in A-pillar on passengerʼs side faulty
Crash sensor in A-pillar on passengerʼs side faulty. 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 B197904
How to read and clear B197904
- 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 B197904 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
| B197812 | Crash sensor in A-pillar on driver’s side - short circuit to B+ |
| B197813 | Crash sensor in A-pillar on driver’s side - open circuit |
| B197829 | Crash sensor in A-pillar on driver’s side - signal implausible |
| B19784A | Crash sensor in A-pillar on driver’s side - part number implausible |
| B197900 | Crash sensor in A-pillar on passenger’s side - equipment fault |
| B197901 | Crash sensor in A-pillar on passengerʼs side - electrical fault |
| B197911 | Crash sensor in A-pillar on passenger’s side - short circuit to ground |
| B197912 | Crash sensor in A-pillar on passenger’s side - short circuit to B+ |
| B197913 | Crash sensor in A-pillar on passenger’s side - open circuit |
| B197929 | Crash sensor in A-pillar on passenger’s side - signal implausible |
| B19794A | Crash sensor in A-pillar on passenger’s side - part number implausible |
| B197A00 | Crash sensor in B-pillar on driver’s side - equipment fault |
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.