C15A1 fault code: what it means

C15A1: Quadra-Lift unable to reach desired ride height (Grand Cherokee). Sagging or stuck height; check air springs, lines and valve block.

Chassis (brakes, steering, suspension) · Costly if missed

Usual causes, most likely first

1. leaking air spring
2. air line leak
3. valve block fault
4. height sensor

C15A1 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

Not sure what C15A1 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.