OBD-II code · Network
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.
Is it safe to drive with U0262?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBus wiring open or shorted
- PossibleModule without power or ground
- PossibleModule failed
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Audio Amplifier B, Vehicle Bus Wiring
Related codes
- U025FLost Communication With Electronic Brake Booster Control Module B
- U0260Lost Communication With Seat Control Switch Module A
- U0261Lost Communication With Seat Control Switch Module B
- U0263Lost Communication With Speech Recognition Module
- U0264Lost Communication With Camera Module Rear
- U0265Lost Communication With Image Processing Sensor A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.