Code Definition

C1A74 — Rear Left Height Sensor Mechanism

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Land Rover

About C1A74

C1A74 is a manufacturer-specific chassis diagnostic trouble code recorded for Land Rover vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1A74 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1A74 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC C1A74 is set by the Suspension Control Module when a mechanical fault is detected with the rear left ride height sensor mechanism. The fault is logged when the sensor signal does not change as expected during suspension movement, stays stuck at a fixed value, or behaves erratically and inconsistently with commanded height adjustments. This points to a problem with the physical linkage between the suspension arm and the sensor rather than the electrical circuit, so the module cannot measure rear left height accurately. With this code set the vehicle may sit low or uneven at the rear left, f...

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