C1241 on Toyota
Manufacturer-Specific Chassis Code (commonly Low/High ABS Module Supply Voltage; GM: Variable Effort Steering)
C1241 on Toyota vehicles indicates manufacturer-specific chassis code (commonly low/high abs module supply voltage; gm: variable effort steering). Au7o has documented this code across 1 Toyota model — most commonly on Land Cruiser. 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. Typical repair costs on Toyota range from $250 to $900, depending on the specific model and root cause.
Common Causes of C1241
- •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
C1241 on Toyota by Model
Toyota Land Cruiser(1 issue)
- 12-Volt Battery Drain and No-Start After Short Parking Periods2024-2025
Multiple owners of the new U.S.-market 2024+ Land Cruiser have reported weak 12-volt batteries, repeated jump-starts, or complete no-start conditions after the vehicle sits for relatively short periods. Reports often mention telematics, accessory modules, or software-related parasitic draw behavior rather than a single failed starter or alternator. The issue is especially frustrating on low-mileage vehicles and can trigger a cascade of warning messages when voltage drops.
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View C1241 across all makes →Frequently Asked Questions
What does C1241 mean on Toyota?▼
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. On Toyota specifically, this code is documented across 1 model.
What causes C1241 on Toyota vehicles?▼
Common causes on Toyota: 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). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1241 on a Toyota?▼
Repair costs on Toyota range from $250 to $900, depending on the specific model and root cause.
Which Toyota models have C1241 documented?▼
Au7o has documented C1241 on 1 Toyota model: Land Cruiser.