U017A code meaning
Lost Communication With Restraints System Sensor K
What U017A means
U017A is logged when restraint sensor K, the eleventh remote crash sensor, has stopped sending data to the restraints module. No manufacturer documents U017A publicly; the Chrysler Jeep lists in NHTSA file PE11-019 end at the sixth satellite. Why J2012 reserves so many slots becomes clear from supplier data: a current Bosch airbag control unit serves 12 PSI5 sensor interfaces, a premium version up to 18. Higher letters therefore belong to well-equipped vehicles, for example with rear-impact sensors, which Bosch also lists as a mounting option. After rear-end repairs or work in the trunk floor, check first whether such a sensor was reconnected. Deployment that depends on sensor K may be switched off; the airbag lamp lights, the MIL stays off.
U017A at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U017A
- Airbag warning lamp on
- Restraint functions depending on sensor K may be disabled
- Scan tool shows sensor K as absent
Common causes of U017A
- Most likelySensor K not reconnected after rear-end or trunk floor repairs
- PossibleSensor line damaged along the rear body
- PossibleCrash sensor K failed
- Less likelyAirbag unit configuration does not match the fitted sensors
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Restraints sensor kCrash signal wiring
What each part of U017A means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7A | The exact fault in that area. |
What to do next
- Note U017A 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 U017A
What does U017A mean?
U017A means "Lost Communication With Restraints System Sensor K". U017A is logged when restraint sensor K, the eleventh remote crash sensor, has stopped sending data to the restraints module. It is a generic code, so it means the same on every make.
Is it safe to drive with U017A?
U017A does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U017A fail an emissions test?
U017A 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 U017A to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will U017A clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.