Network, generic

U0464 Invalid Data Received From Navigation Control Module

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0464 is stored when a module still hears the navigation control module but rejects its content: a frame whose checksum fails, a message counter that no longer advances, or position, heading and route values outside their defined range. Typical listeners are the instrument cluster or head-up display, which repeat turn arrows, and on some cars predictive cruise or shift logic that reads the map ahead. No manufacturer documents U0464 in an openly accessible source. The protection behind such checks, a CRC and a sequence counter per message, is laid down in the AUTOSAR end-to-end protocol. U0163 means the unit has gone silent, U0463 concerns the separate navigation display and U046B the GPS receiver. The consequences stay in guidance and comfort: missing arrows or a wrong map position, no MIL.

Likely causes

Navigation unit software or map update fault sending implausible values
Loose connector or damaged bus wiring at the navigation unit or head unit
Weak 12 V battery or voltage dips during start-up corrupting frames
Internal fault in the navigation control module

Symptoms

  • Turn arrows missing in the cluster or head-up display
  • Vehicle position on the map jumps or is wrong
  • Route guidance stops or restarts unexpectedly

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–900
Time0.5–2.5 h

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

Parts involved

navigation module

Related codes

U0163U0463U046BU0162

References: autosar.org, en.wikipedia.org.