C1A54 on 2012-2019 Land Rover Range Rover Evoque — Manufacturer-Specific EPS/Steering Control Circuit Fault
1 vehicles · 1 makes · $500-$2,500 repair
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, with repair costs ranging from $500 to $2,500.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C1A54, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
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 for C1A54 range from $500 to $2,500, depending on the vehicle and root cause.
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.