C1A00 on Land Rover
Stability Control System Fault
C1A00 on Land Rover vehicles indicates stability control system fault. Au7o has documented this code across 1 Land Rover model — most commonly on Discovery. This is a chassis/stability-control code that signals a general fault within the electronic stability control system — the network of sensors and the controller that keep the vehicle from skidding or losing traction during hard cornering or slippery conditions. C1A00 typically means the stability control module detected an internal fault or a problem somewhere in the system it can't fully resolve, so it may disable stability and traction control and turn on the related warning lights. Importantly, C1A00 is a manufacturer-specific code and its precise meaning varies by brand, and the full code often includes additional sub-numbers needed to pinpoint the exact fault. Because it's broad, an accurate diagnosis usually requires a capable scan tool to read the extended code and any companion codes. Typical repair costs on Land Rover range from $300 to $1,800, depending on the specific model and root cause.
Common Causes of C1A00
- •Internal stability control module fault
- •Companion sensor faults (wheel speed, steering angle, yaw/lateral) triggering the system
- •Wiring, connector or ground problems in the stability control circuit
- •Low system or battery voltage / charging issue
- •Module software, calibration or configuration fault
- •Damaged or unplugged sensor harness after service
- •Faulty ABS/stability hydraulic control unit (less common)
C1A00 on Land Rover by Model
Land Rover Discovery(1 issue)
- Terrain Response System Faults and Mode Selection Failure2005-2016
The Terrain Response system on the LR3/LR4 develops faults where mode selection fails or the system defaults to General mode only. The rotary selector switch wears out internally, and the shift motor on the transfer case can fail. Corroded connectors at the transfer case are a common root cause. The vehicle remains drivable in General mode but loses off-road capability.
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View C1A00 across all makes →Frequently Asked Questions
What does C1A00 mean on Land Rover?▼
C1A00 stands for "Stability Control System Fault." This is a chassis/stability-control code that signals a general fault within the electronic stability control system — the network of sensors and the controller that keep the vehicle from skidding or losing traction during hard cornering or slippery conditions. C1A00 typically means the stability control module detected an internal fault or a problem somewhere in the system it can't fully resolve, so it may disable stability and traction control and turn on the related warning lights. Importantly, C1A00 is a manufacturer-specific code and its precise meaning varies by brand, and the full code often includes additional sub-numbers needed to pinpoint the exact fault. Because it's broad, an accurate diagnosis usually requires a capable scan tool to read the extended code and any companion codes. On Land Rover specifically, this code is documented across 1 model.
What causes C1A00 on Land Rover vehicles?▼
Common causes on Land Rover: Internal stability control module fault, Companion sensor faults (wheel speed, steering angle, yaw/lateral) triggering the system, Wiring, connector or ground problems in the stability control circuit, Low system or battery voltage / charging issue, Module software, calibration or configuration fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1A00 on a Land Rover?▼
Repair costs on Land Rover range from $300 to $1,800, depending on the specific model and root cause.
Which Land Rover models have C1A00 documented?▼
Au7o has documented C1A00 on 1 Land Rover model: Discovery.