Network, generic

U0514 Invalid Data Received From Mirror Control Module A

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

J2012 provides two mirror control units, and U0514 concerns unit A: its frames keep arriving, but the receiver finds the content unusable, for instance a signal flagged invalid, a wrong counter or checksum, or a value outside the defined range. FCA ties the letter to the cabin mirror. In its Grand Cherokee case S2108000013 the partner code U0213 is called interior mirror control module A and was logged in the BCM after a configuration restore had wrongly declared a combined rear view mirror module fitted. Jaguar Land Rover shows the invalid-data side with its own code B1974-86 on the 2020 Evoque, caused by mirror software and without any effect on function. Depending on the unit, auto-dimming, a camera mirror view or memory settings may be unavailable. U0213 means silence; module B uses U044F.

Likely causes

Software error in the mirror module sending invalid signal values
Vehicle configuration in the BCM not matching the fitted mirror variant
Mirror control module A internally faulty
Loose or corroded connector at the mirror (headliner or door)

Symptoms

  • Often no noticeable effect; code found only during a scan
  • Auto-dimming or camera mirror view unavailable
  • Mirror memory or folding function not working

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–500
Time0.2–2 h

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

Parts involved

mirror control module a

Related codes

U0213U044FU014D

References: static.nhtsa.gov, static.nhtsa.gov, en.wikipedia.org.