Body, generic

B0455 Display Module Internal Failure

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

No J2012 list available to the public includes B0455, and factory literature is silent on it, so the code is unverified. It names an internal fault of a display module, such as the centre screen or a cluster panel, not its wiring or data link. Saab's 2011 9-5 sets B1020 when the radio gets an improper status reply from its display assembly, pointing to an electronics fault or a jammed button; on the 9-4X the same number covers the radio/HVAC control panel. Denso's US11348495B2 lets each display test its own circuit, report to the image ECU and, if it fails, hand speed and warnings to another screen. Hyundai Mobis (US11961434B2) spots a frozen picture through hidden test pixels. Bus loss to a display is U0162 or U0255; a dark screen with live content suggests B0490.

Likely causes

Display controller or panel electronics failed
Software fault, often curable by an update
Button on the display unit jammed and reported as a fault

Symptoms

  • Screen stays black, flickers or freezes on one picture
  • Touch input or buttons on the display do not respond
  • Information moves to another display or a warning appears

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€200–1,800
Time0.5–2.5 h

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

Parts involved

display moduleinstrument cluster

Related codes

B0490U0162U0255

References: saabwisonline.com, saabwisonline.com, patents.google.com, patents.google.com.