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P1B3D00 — Control unit – Function limitation
Control unit – Function limitation. 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 P1B3D00
How to read and clear P1B3D00
- 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 P1B3D00 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 Battery Energy Control Module
| P168A00 | Reversible crash shut-off was triggered |
| P1A0100 | Crash signal monitoring, failed |
| P1A3700 | Cell module control unit – implausible overvoltage |
| P1B1500 | Hybrid battery precharge resistance, Excess temp. |
| P1B1600 | Charging hybrid battery, No external charge detected |
| P1B1B00 | Control unit – function restriction |
| P1CA800 | Crash signal monitoring, failed |
| P1D0100 | Warning: Capacity jump |
| P1D5400 | Contactor – current draw implausible |
| P1D5500 | Current detection defective |
| P1D5700 | High voltage battery, cell voltage difference too high |
| P1D5800 | Number of cell modules implausible |
All 198 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.