C1A54 on 2012-2019 Land Rover Range Rover Evoque — Manufacturer-Specific EPS/Steering Control Circuit Fault
1 vehicles · 1 makes
Most Reported On
C1A54 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific EPS/Steering Control Circuit Fault.” C1A54 is an obscure manufacturer-specific chassis code, most commonly seen in the Electric Power Steering family of trouble codes. It generally indicates a circuit or signal fault within the steering control system that the power steering ECU detected as out of specification. Because the exact meaning is defined by the individual vehicle maker, a conservative interpretation is that it points to a steering-system sensor, motor, or wiring problem. Reduced or intermittent steering assist is the typical symptom. This code is most commonly reported on 2012-2019 Land Rover Range Rover Evoque.
Common Causes
Diagnostic Tools
C1A54 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 C1A54 mean?
C1A54 stands for "Manufacturer-Specific EPS/Steering Control Circuit Fault." C1A54 is an obscure manufacturer-specific chassis code, most commonly seen in the Electric Power Steering family of trouble codes. It generally indicates a circuit or signal fault within the steering control system that the power steering ECU detected as out of specification. Because the exact meaning is defined by the individual vehicle maker, a conservative interpretation is that it points to a steering-system sensor, motor, or wiring problem. Reduced or intermittent steering assist is the typical symptom.
What are the most common causes of C1A54?
The most common causes of C1A54 are: Wiring or connector fault in the EPS circuit, Faulty steering sensor (angle/torque), EPS motor or control module fault, Low or unstable supply voltage to the steering ECU, Poor ground connection, Module software/calibration issue. The specific cause varies by vehicle.
How much does it cost to fix C1A54?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by C1A54?
Au7o has documented C1A54 across 1 vehicle models from 1 manufacturers: Land Rover.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.