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B19C500 — System restriction – differential lock error
System restriction – differential lock error. 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 B19C500
How to read and clear B19C500
- 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 B19C500 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 Chassis Control
| B1884F3 | System restriction – difference between vehicle height and required height at FL |
| B1884F4 | System restriction – difference between vehicle height and required height at FR |
| B1884F5 | System restriction – difference in vehicle height at RL |
| B1884F6 | System restriction – difference in vehicle height at RR |
| B19BEF0 | All-wheel drive fault indication active |
| B19C300 | All-wheel drive failure indication |
| B19C600 | Display of differential lock failure, active |
| B19F300 | Indicator light for suspension management |
| B19F3F0 | Indicator light for chassis control, yellow warning message |
| B19F3F1 | Indicator light for chassis control, red warning message |
| B200000 | Control unit – function restriction |
| B200087 | Control module, Software incompatible |
All 407 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.