Network
generic / SAE
U0262
Lost Communication With Audio Amplifier B
The vehicle bus reports loss of communication with audio amplifier B. Speakers driven by this amplifier go silent or fall back to a head-unit-only output.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 62
Possible causes
- Bus wiring open or shorted high
- Module without power or ground medium
- Module failed medium
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–1500 €
- Estimated time: 0.5–3 h
- Component: audio amplifier b
- Component: vehicle bus wiring
- drive cycle required
Sources
References
sae:J2012