U0459 code meaning
Invalid Data Received From Head Up Display
What U0459 means
The head-up display shows speed, route arrows or warnings as a virtual image in the windshield. It takes most content from other modules and reports its own state, such as brightness, image position, page or standby, back over the vehicle bus or a LIN link to the cluster. U0459 is set when a partner receives HUD data that fail its checks; U0158 means the HUD is not heard at all. No manufacturer documents U0459 publicly. GM shows how near the two faults lie: in bulletin 22-NA-113 for 2020-22 Cadillac CT4 and CT5 with option UV6, badly timed LIN messages while the HUD entered standby left it blank and stored U0158 in the cluster, cured by reprogramming the cluster and pulling the HUD fuse. The 2011 Saab 9-5 code table lists the HUD as a separate node. Symptom: blank or frozen projection; no MIL.
U0459 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0459
- Head-up display blank or frozen
- Brightness, position or page settings have no effect
Common causes of U0459
- Most likelySoftware of the cluster or HUD handling messages badly, for example around standby
- PossibleHUD shutting down or sending fault status because of heat
- Less likelyConnector or LIN/bus wiring fault at the HUD
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Head up display
What each part of U0459 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 59 | The exact fault in that area. |
What to do next
- Note U0459 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 U0459
What does U0459 mean?
U0459 means "Invalid Data Received From Head Up Display". The head-up display shows speed, route arrows or warnings as a virtual image in the windshield. It is a generic code, so it means the same on every make.
Is it safe to drive with U0459?
U0459 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0459 fail an emissions test?
U0459 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 U0459 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2 hours of work. This is a job for a workshop.
Will U0459 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.