C0221 on 2000-2006 GMC Yukon XL — Right Front Wheel Speed Sensor Circuit Open
1 vehicles · 1 makes · $180-$900 repair
Most Reported On
C0221 is an OBD-II diagnostic trouble code meaning “Right Front Wheel Speed Sensor Circuit Open.” This code indicates the ABS module detected an open circuit in the right front wheel speed sensor circuit — meaning the signal path is broken and no usable wheel-speed data is coming from that corner. The sensor provides essential input for ABS, traction control, and stability control, so those systems are usually disabled when the signal is lost. The ABS and possibly traction/brake warning lights will come on. Normal (non-ABS) braking remains available. This code is most commonly reported on 2000-2006 GMC Yukon XL, with repair costs ranging from $180 to $900.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C0221, 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 C0221 mean?
C0221 stands for "Right Front Wheel Speed Sensor Circuit Open." This code indicates the ABS module detected an open circuit in the right front wheel speed sensor circuit — meaning the signal path is broken and no usable wheel-speed data is coming from that corner. The sensor provides essential input for ABS, traction control, and stability control, so those systems are usually disabled when the signal is lost. The ABS and possibly traction/brake warning lights will come on. Normal (non-ABS) braking remains available.
What are the most common causes of C0221?
The most common causes of C0221 are: Open/broken wiring to the sensor, Failed right front wheel speed sensor, Disconnected or corroded sensor connector, Damaged harness near the wheel (flex/chafe point), Corrosion at the ABS module connector, Damaged tone (reluctor) ring, Poor ground in the sensor circuit. The specific cause varies by vehicle.
How much does it cost to fix C0221?
Repair costs for C0221 range from $180 to $900, depending on the vehicle and root cause.
Which vehicles are affected by C0221?
Au7o has documented C0221 across 1 vehicle models from 1 manufacturers: GMC.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.