OBD-II code · Network
U0190 Lost Communication with Subwoofer Amplifier Module
The Subwoofer Amplifier Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. The subwoofer amplifier drops off the bus. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
Is it safe to drive with U0190?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySubwoofer amp unpowered
- PossibleCAN wiring to subwoofer amp broken
- Less likelyGateway module routing CAN messages incorrectly
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
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Subwoofer Amplifier Module, Can Bus Wiring
Related codes
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- U0189Lost Communication with Auxiliary Heater Control Module
- U018ALost Communication With Headlamp Leveling Control Module B
- U0191Lost Communication with Television Tuner Module
- U0192Lost Communication with Personal Computer
- U0193Lost Communication with Mobile Phone Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.