Suspension Control Mode Switch Circuit
2018-2018 Audi A6 3.0L Supercharged V6
The 2018 Audi A6 is equipped with a 3.0L V6 engine. Below you'll find detailed c0305 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the driver-selectable suspension mode switch (comfort/sport/auto).
Symptoms
- Suspension mode cannot be changed
- Stuck in one mode
- Switch indicator not illuminating
- Warning light on
Common Causes
- Faulty mode switch
- Switch connector corroded
- Wiring damage
- Module input failure
Diagnostic Steps
- Test switch resistance in each position
- Check switch connector
- Inspect wiring
- Monitor switch input at module with scan tool
Repair Notes
Replace suspension mode switch.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0305 on Other Vehicles
Common Questions
What does code C0305 mean on a 2018-2018 Audi A6?
C0305 stands for "Suspension Control Mode Switch Circuit". Malfunction in the driver-selectable suspension mode switch (comfort/sport/auto).
What are the symptoms of C0305 on a Audi A6?
Common symptoms of C0305 include: Suspension mode cannot be changed, Stuck in one mode, Switch indicator not illuminating, Warning light on.
What causes C0305 on a 2018-2018 Audi A6?
Common causes of C0305 include: Faulty mode switch, Switch connector corroded, Wiring damage, Module input failure.
Last updated: March 2026