Land Rover
Front left ride height sensor circuit on Discovery 3/4 air suspension. Ride height goes wrong and the car can drop to the bump stops.
C1A03 fault code: what it means
C1A03: Front left ride height sensor circuit on Discovery 3/4 air suspension. Ride height goes wrong and the car can drop to the bump stops.
Usual causes, most likely first
- loose pin or corroded height sensor connector
- faulty height sensor
- damaged wiring
C1A03 by make
What the repair usually costs
- Coil springs, pairNZ$470–NZ$1,060 · A$450–A$1,040
- Air suspension strut / air spring, each (Range Rover, Mercedes, Audi)NZ$930–NZ$3,580 · A$850–A$3,210
- Air suspension compressor (Range Rover, Mercedes, Audi)NZ$710–NZ$2,650 · A$680–A$2,450
Not sure what C1A03 means on your car? Ask Credov.
Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.