C1241 on 2024-2025 Toyota Land Cruiser — Manufacturer-Specific Chassis Code (commonly Low/High ABS Module Supply Voltage; GM: Variable Effort Steering)
1 vehicles · 1 makes · $250-$900 repair
Most Reported On
C1241 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific Chassis Code (commonly Low/High ABS Module Supply Voltage; GM: Variable Effort Steering).” C1241 is a manufacturer-specific chassis code with two common meanings: on Toyota/Lexus and many makes it indicates low or unstable (or out-of-range) supply voltage to the skid control / ABS-VSC ECU, while some GM applications use it for a variable effort steering circuit malfunction. In the voltage case, the module detected battery voltage below or above its acceptable window (often roughly 10-16V) and disabled ABS and stability control as a precaution. The ABS, traction, and VSC warning lights typically come on. Test the battery and charging system first on voltage-related applications, and confirm the exact definition for your make and model. This code is most commonly reported on 2024-2025 Toyota Land Cruiser, with repair costs ranging from $250 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 C1241, 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 C1241 mean?
C1241 stands for "Manufacturer-Specific Chassis Code (commonly Low/High ABS Module Supply Voltage; GM: Variable Effort Steering)." C1241 is a manufacturer-specific chassis code with two common meanings: on Toyota/Lexus and many makes it indicates low or unstable (or out-of-range) supply voltage to the skid control / ABS-VSC ECU, while some GM applications use it for a variable effort steering circuit malfunction. In the voltage case, the module detected battery voltage below or above its acceptable window (often roughly 10-16V) and disabled ABS and stability control as a precaution. The ABS, traction, and VSC warning lights typically come on. Test the battery and charging system first on voltage-related applications, and confirm the exact definition for your make and model.
What are the most common causes of C1241?
The most common causes of C1241 are: Weak or failing battery (can't hold steady voltage), Charging system / alternator output fault, Corroded or loose battery terminals and grounds, Voltage drop in power or ground wiring to the module, Variable effort steering circuit fault (GM applications), Internal ABS/skid control module fault. The specific cause varies by vehicle.
How much does it cost to fix C1241?
Repair costs for C1241 range from $250 to $900, depending on the vehicle and root cause.
Which vehicles are affected by C1241?
Au7o has documented C1241 across 1 vehicle models from 1 manufacturers: Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.