C1204 on 2021-2024 Jeep Grand Wagoneer — Manufacturer-Specific Chassis/ABS Code (Wheel-Speed Sensor or ABS Valve Circuit)
1 vehicles · 1 makes · $650-$2,200 repair
Most Reported On
C1204 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific Chassis/ABS Code (Wheel-Speed Sensor or ABS Valve Circuit).” C1204 is a manufacturer-specific chassis/ABS trouble code, and its exact meaning depends on the maker; reported definitions include a wheel-speed sensor range/performance fault and an ABS dump/inlet valve circuit fault (for example, short to battery). In all cases a chassis/ABS control module has detected an electrical problem in a monitored circuit. Setting this code typically disables ABS and traction/stability control and turns on the related warning lights, while basic braking remains. Confirm the precise definition for your specific make and model with a capable scan tool or factory service data before replacing parts. This code is most commonly reported on 2021-2024 Jeep Grand Wagoneer, with repair costs ranging from $650 to $2,200.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C1204, 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 C1204 mean?
C1204 stands for "Manufacturer-Specific Chassis/ABS Code (Wheel-Speed Sensor or ABS Valve Circuit)." C1204 is a manufacturer-specific chassis/ABS trouble code, and its exact meaning depends on the maker; reported definitions include a wheel-speed sensor range/performance fault and an ABS dump/inlet valve circuit fault (for example, short to battery). In all cases a chassis/ABS control module has detected an electrical problem in a monitored circuit. Setting this code typically disables ABS and traction/stability control and turns on the related warning lights, while basic braking remains. Confirm the precise definition for your specific make and model with a capable scan tool or factory service data before replacing parts.
What are the most common causes of C1204?
The most common causes of C1204 are: Faulty wheel speed sensor or damaged tone ring, ABS hydraulic valve (dump/inlet) circuit fault, Wiring or connector damage / corrosion, Short to power or short to ground in the circuit, ABS/stability control module (HCU) fault, Poor ground or low system voltage. The specific cause varies by vehicle.
How much does it cost to fix C1204?
Repair costs for C1204 range from $650 to $2,200, depending on the vehicle and root cause.
Which vehicles are affected by C1204?
Au7o has documented C1204 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.