U0492 code meaning
Invalid Data Received From Television
What U0492 means
U0492 is set when a television tuner keeps transmitting but the module listening to it, usually the head unit or a display controller, cannot use what arrives, for instance because values lie outside their defined range, a message counter stalls or a checksum is wrong. GM's 2011 code lists for the Saab 9-5 and 9-4X simply call the matching lost-contact code U0191 Television, meaning a separate TV receiver on the bus. Elsewhere the tuner lives inside the radio: for Japanese-market Jeep Grand Cherokee and Cherokee of 2014, bulletin 08-067-15 updated the radio software, which among other things cured a blurry digital TV picture. No manufacturer documents U0492 itself. Expect a missing or frozen TV image while radio and other sources carry on; driving is unaffected, no MIL.
U0492 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0492
- No TV picture or a frozen, blurred image
- Radio and other media sources keep working
Common causes of U0492
- Most likelyTuner or head-unit software with faulty TV data, cured by an update
- PossibleInternal fault of the TV tuner
- Less likelySupply, ground or bus connection fault at the tuner
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Tv tuner module
What each part of U0492 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 92 | The exact fault in that area. |
What to do next
- Note U0492 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 U0492
What does U0492 mean?
U0492 means "Invalid Data Received From Television". U0492 is set when a television tuner keeps transmitting but the module listening to it, usually the head unit or a display controller, cannot use what arrives, for instance because values lie outside their defined range, a message counter stalls or a checksum is wrong. It is a generic code, so it means the same on every make.
Is it safe to drive with U0492?
U0492 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0492 fail an emissions test?
U0492 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 U0492 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will U0492 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.