C1AA0: Manufacturer-Specific Chassis Code (commonly camera/driver-assist sensor circuit)
2 vehicles · 1 makes · $250-$1,800 repair
Most Reported On
C1AA0 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific Chassis Code (commonly camera/driver-assist sensor circuit).” C1AA0 is a manufacturer-specific chassis (C) trouble code, so its exact meaning varies by automaker. It generally points to a fault in a chassis safety or driver-assistance subsystem; on several makes it is associated with a forward camera or related sensor circuit used for features like lane-keeping or collision warning. Because the precise definition differs between manufacturers, the affected component should be confirmed against the specific vehicle's service information. It usually indicates the controlling module detected a circuit or signal fault in that subsystem. This code is most commonly reported on 2023-2025 Lexus IS, and 2023-2025 Lexus RX, with repair costs ranging from $250 to $1,800.
Common Causes
Typical Repair Cost
Based on 2 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C1AA0, 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
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
FAQ
What does C1AA0 mean?
C1AA0 stands for "Manufacturer-Specific Chassis Code (commonly camera/driver-assist sensor circuit)." C1AA0 is a manufacturer-specific chassis (C) trouble code, so its exact meaning varies by automaker. It generally points to a fault in a chassis safety or driver-assistance subsystem; on several makes it is associated with a forward camera or related sensor circuit used for features like lane-keeping or collision warning. Because the precise definition differs between manufacturers, the affected component should be confirmed against the specific vehicle's service information. It usually indicates the controlling module detected a circuit or signal fault in that subsystem.
What are the most common causes of C1AA0?
The most common causes of C1AA0 are: Faulty or obstructed camera/sensor module, Damaged wiring or connectors in the sensor circuit, Loss of power or ground to the module, Corroded or loose connector pins, Module software/calibration fault, Internal module failure. The specific cause varies by vehicle.
How much does it cost to fix C1AA0?
Repair costs for C1AA0 range from $250 to $1,800, depending on the vehicle and root cause.
Which vehicles are affected by C1AA0?
Au7o has documented C1AA0 across 2 vehicle models from 1 manufacturers: Lexus.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.