C0071 on 2011-2013 Ford Fusion — Brake Switch Circuit
1 vehicles · 1 makes · $1,200-$3,500 repair
Most Reported On
C0071 is an OBD-II diagnostic trouble code meaning “Brake Switch Circuit.” C0071 is a chassis code indicating a fault in the brake switch (brake light/brake pedal switch) circuit, as seen by the ABS or stability control module. The brake switch tells modules when the brake pedal is pressed, which the ABS/traction/stability systems use to coordinate their operation. The code sets when the brake switch signal is implausible, missing, or electrically inconsistent. Symptoms can include an ABS or traction control warning light, disabled stability features, cruise control that won't engage, or brake lights that behave incorrectly. This code is most commonly reported on 2011-2013 Ford Fusion, with repair costs ranging from $1,200 to $3,500.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C0071, 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
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FAQ
What does C0071 mean?
C0071 stands for "Brake Switch Circuit." C0071 is a chassis code indicating a fault in the brake switch (brake light/brake pedal switch) circuit, as seen by the ABS or stability control module. The brake switch tells modules when the brake pedal is pressed, which the ABS/traction/stability systems use to coordinate their operation. The code sets when the brake switch signal is implausible, missing, or electrically inconsistent. Symptoms can include an ABS or traction control warning light, disabled stability features, cruise control that won't engage, or brake lights that behave incorrectly.
What are the most common causes of C0071?
The most common causes of C0071 are: Faulty or misadjusted brake light switch, Damaged wiring or connector at the brake switch, Corroded or loose connector terminals, Blown brake light fuse, Open or short in the brake switch circuit, Poor ground for the switch circuit, Faulty ABS/control module input (less common). The specific cause varies by vehicle.
How much does it cost to fix C0071?
Repair costs for C0071 range from $1,200 to $3,500, depending on the vehicle and root cause.
Which vehicles are affected by C0071?
Au7o has documented C0071 across 1 vehicle models from 1 manufacturers: Ford.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.