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U13C300 — Control unit for rear-axle steering 2 - no communication
Control unit for rear-axle steering 2 - no communication. 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 U13C300
How to read and clear U13C300
- 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 U13C300 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 Gateway
| U139B00 | Laser scanner - no communication |
| U13BE00 | Front sensors for driver assistance systems, Private CAN bus - no communication |
| U13BF00 | Brake electronics control module, no communication at the second bus connection |
| U13C000 | Airbag sensor, Private CAN bus - no communication |
| U13C100 | Lane Change Assist control unit (master - left), Private CAN bus - no communication |
| U13C200 | Lane Change Assist control unit (slave - right), Private CAN bus - no communication |
| U13EA00 | High-voltage system, locked |
| U13FD00 | 48-volt system, locked |
| U13FE00 | Inverter for electrical outlet, Locking after crash active |
| U140500 | Terminal 15 signal line – signal implausible |
| U140600 | Closed-circuit current too high |
| U140B00 | Energy management active |
All 374 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.