OBD Guide

C15A8

Air Suspension Down Button Stuck

C15A8 is an OBD-II diagnostic trouble code meaning: Air Suspension Down Button Stuck. Common causes: mechanical jamming of the lowering button, short circuit in the button circuit. Estimated repair cost: $22–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • Inability to lower suspension
  • Spontaneous change in clearance
  • Suspension fault indicator is on
  • The suspension freezes in one position

Causes

  • Mechanical jamming of the lowering button
  • Short circuit in the button circuit
  • Broken wires to the button
  • Malfunction of the suspension control unit
  • Button contact corrosion

How to Fix

  1. Diagnostics of button operation with a multimeter
  2. Visual inspection of the button and wiring harness
  3. Cleaning or replacing a stuck button
  4. Repairing damaged wiring
  5. Reboot/reflash the suspension control unit

Related codes

FAQ

What does the C15A8 code mean?

C15A8 is an OBD-II diagnostic trouble code that indicates: Air Suspension Down Button Stuck

What causes a C15A8 error code?

The most common causes of C15A8 include: Mechanical jamming of the lowering button; Short circuit in the button circuit; Broken wires to the button; Malfunction of the suspension control unit.

How do I fix a C15A8 diagnostic trouble code?

To fix C15A8: Diagnostics of button operation with a multimeter. Visual inspection of the button and wiring harness. Cleaning or replacing a stuck button. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C15A8?

Limited driving only, diagnose soon

How much does it cost to fix C15A8?

The estimated repair cost for C15A8 is $22–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat