C11D1 on 2025-2026 Porsche 911 (Carrera GTS, Carrera 4 GTS, Turbo, Turbo S) — Rear Axle Steering - Travel Blocked
1 vehicles · 1 makes
Most Reported On
C11D1 is an OBD-II diagnostic trouble code meaning “Rear Axle Steering - Travel Blocked.” The rear axle steering control unit has determined that a rear-wheel steering actuator could not reach its commanded position - the servo travel is being blocked or the position feedback does not follow the command. The system fails safe by locking the rear wheels straight and disabling rear-axle steering. Porsche Technical Information 07/25 (ENU 4883) documents C11D1F5 "Travel blocked (000028)" stored together with C1445F2 on 2025-onward 992 Carrera GTS, Carrera 4 GTS, Turbo and Turbo S with rear axle steering (M-No. 0N5). This code is most commonly reported on 2025-2026 Porsche 911 (Carrera GTS, Carrera 4 GTS, Turbo, Turbo S).
Common Causes
Diagnostic Tools
C11D1 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does C11D1 mean?
C11D1 stands for "Rear Axle Steering - Travel Blocked." The rear axle steering control unit has determined that a rear-wheel steering actuator could not reach its commanded position - the servo travel is being blocked or the position feedback does not follow the command. The system fails safe by locking the rear wheels straight and disabling rear-axle steering. Porsche Technical Information 07/25 (ENU 4883) documents C11D1F5 "Travel blocked (000028)" stored together with C1445F2 on 2025-onward 992 Carrera GTS, Carrera 4 GTS, Turbo and Turbo S with rear axle steering (M-No. 0N5).
What are the most common causes of C11D1?
The most common causes of C11D1 are: Rear axle steering control unit software calibration issue - Porsche's documented remedy is re-programming with PIWIS Tester software 43.200.031 or higher, Mechanical binding or obstruction in the rear-axle steering actuator, Debris, impact, or corrosion damage to the servo motor or its linkage, Internal servo motor or position sensor fault. The specific cause varies by vehicle.
How much does it cost to fix C11D1?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by C11D1?
Au7o has documented C11D1 across 1 vehicle models from 1 manufacturers: Porsche.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.