U0514 code meaning
Invalid Data Received From Mirror Control Module A
What U0514 means
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.
U0514 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.2 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0514
- Often no noticeable effect; code found only during a scan
- Auto-dimming or camera mirror view unavailable
- Mirror memory or folding function not working
Common causes of U0514
- Most likelySoftware error in the mirror module sending invalid signal values
- PossibleVehicle configuration in the BCM not matching the fitted mirror variant
- PossibleMirror control module A internally faulty
- Less likelyLoose or corroded connector at the mirror (headliner or door)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Mirror control module a
What each part of U0514 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 14 | The exact fault in that area. |
What to do next
- Note U0514 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0514
What does U0514 mean?
U0514 means "Invalid Data Received From Mirror Control Module A". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with U0514?
U0514 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0514 fail an emissions test?
U0514 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0514 to fix?
Difficulty: medium. A typical repair takes 0.2 to 2 hours of work. This is a job for a workshop.
Will U0514 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.