B2600low severityBody
Horn Circuit Malfunction
on 2017 Audi R8 5.2L V10 (Gen 2, 562hp) · AWD
What this code means
Malfunction in the vehicle horn circuit. The horn does not sound or sounds abnormally.
Symptoms
- Horn does not sound
- Horn sounds weak
- Horn stuck on
- Intermittent horn operation
- Horn sounds different than normal
Common causes
- Faulty horn
- Horn relay failure
- Clock spring failure (horn through steering wheel)
- Horn switch failure
- Wiring issue
- Corroded horn ground
Diagnostic steps
- Test horn with direct power
- Check horn relay
- Test clock spring horn circuit
- Inspect horn switch
- Check ground connection
- Verify horn fuse
Repair notes
Replace horn, relay, or clock spring. Check horn ground for corrosion.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0009
Rear Center Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment