C003B on 2022-2024 Jeep Grand Wagoneer — Right Rear Wheel Speed Sensor Supply Circuit
1 vehicles · 1 makes · $250-$1,200 repair
Most Reported On
C003B is an OBD-II diagnostic trouble code meaning “Right Rear Wheel Speed Sensor Supply Circuit.” This chassis code relates to the supply/circuit feeding the right rear wheel speed sensor used by the ABS and stability systems. The control module detected a problem with the power supply or signal circuit to that sensor, meaning it may not be receiving valid wheel-speed data from the right rear corner. Because ABS, traction control, and stability control all rely on accurate wheel speed signals, those systems may be partially or fully disabled while this code is active. Base braking still works, but the safety electronics may not. This code is most commonly reported on 2022-2024 Jeep Grand Wagoneer, with repair costs ranging from $250 to $1,200.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C003B, 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 C003B mean?
C003B stands for "Right Rear Wheel Speed Sensor Supply Circuit." This chassis code relates to the supply/circuit feeding the right rear wheel speed sensor used by the ABS and stability systems. The control module detected a problem with the power supply or signal circuit to that sensor, meaning it may not be receiving valid wheel-speed data from the right rear corner. Because ABS, traction control, and stability control all rely on accurate wheel speed signals, those systems may be partially or fully disabled while this code is active. Base braking still works, but the safety electronics may not.
What are the most common causes of C003B?
The most common causes of C003B are: Faulty right rear wheel speed sensor, Damaged or corroded sensor wiring/connector, Open or short in the sensor supply circuit, Debris or rust at the sensor mounting/tone ring, Damaged tone (reluctor) ring, Corrosion at the ABS module connector, Failed wheel bearing integrated with the sensor. The specific cause varies by vehicle.
How much does it cost to fix C003B?
Repair costs for C003B range from $250 to $1,200, depending on the vehicle and root cause.
Which vehicles are affected by C003B?
Au7o has documented C003B across 1 vehicle models from 1 manufacturers: Jeep.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.