Network, generic

U0563 Invalid Data Received From Audio Amplifier B

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

Premium sound systems often use an external amplifier away from the head unit, and large installations can need a second one, audio amplifier B. Such amplifiers are network nodes: the head unit sends volume and other commands over CAN instead of an analog level, and the amplifier reports its status back, as a patent on modular vehicle amplifiers explains. Jeep shows the reverse direction on the 2023 Grand Cherokee and Wagoneer: the amplifier module logged U0485 for implausible data from the Uconnect 5 radio, cleared by radio software T25L (08-046-23). U0563 is the same kind of fault with amplifier B as sender; U0262 means it went silent and U0487 concerns amplifier A. No manufacturer documents U0563. Some speakers may drop out or volume may jump.

Likely causes

Amplifier B software not matching the head unit software level

Aftermarket amplifier or audio interface on the vehicle bus sending non-conforming data

Audio amplifier B internally faulty or overheated

Symptoms

Some speakers or the subwoofer silent while others play
Volume or sound settings react incorrectly

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€0–900

Time0.3–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

audio amplifier b

Related codes

U0262 U0487

References: patents.google.com, static.nhtsa.gov.