B0461low severityBody
Amplifier Circuit Malfunction
on 2018 Lincoln MKX 3.7L V6 · AWD
What this code means
Malfunction in the audio amplifier circuit. The amplifier is not producing audio output.
Symptoms
- No sound from speakers
- Audio cuts out intermittently
- Distorted audio from all speakers
- Amplifier overheating
Common causes
- Faulty amplifier
- Speaker wiring short causing amp protection mode
- Power supply issue to amplifier
- Water damage to trunk-mounted amplifier
- Overheating from blocked ventilation
Diagnostic steps
- Check amplifier power and ground
- Test speaker wiring for shorts
- Inspect amplifier for water damage
- Check amplifier ventilation
- Test head unit audio output
Repair notes
Replace amplifier or repair speaker wiring. Check for water intrusion if trunk-mounted.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0005
Driver Knee Airbag Deployment Circuit