U0064 code meaning
Vehicle Communication Bus E
What U0064 means
U0064 is the umbrella fault for Vehicle Communication Bus E, the fifth freely assignable network slot. Jaguar Land Rover documents it for the 2022-25 Range Rover (L460) and 2023-25 Range Rover Sport (L461): modules store U0064-88 (bus off) and U0064-87 (missing message), often together with U0080 codes for Bus F, when connector CM32B3/4 between the main body and instrument panel harnesses is not fully latched. Owners report electrical faults around power mode zero and FlexRay module functions, sometimes only intermittent and depending on movement in the cabin or on temperature. JLR has the connector unplugged, its pins inspected and relatched even when it looks secure. Volkswagen Group uses the neighbouring code U0065 for the infotainment CAN in the gateway.
U0064 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0064
- Electrical faults that come and go with cabin movement or temperature (JLR)
- Modules on Bus E not responding, bus-off or missing-message entries
- Codes for further networks stored alongside
Common causes of U0064
- Most likelyHarness connector between body and instrument panel not fully latched (JLR CM32B3/4)
- PossibleBent or spread pins in that connector
- Less likelySupply or ground fault at a module on Bus E
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bus e wiringBus e nodesModule connector
What each part of U0064 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 64 | The exact fault in that area. |
What to do next
- Note U0064 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 U0064
What does U0064 mean?
U0064 means "Vehicle Communication Bus E". U0064 is the umbrella fault for Vehicle Communication Bus E, the fifth freely assignable network slot. It is a generic code, so it means the same on every make.
Is it safe to drive with U0064?
Drive gently and only to a workshop. With U0064 the car can go into limp mode (reduced power) to protect itself.
Will U0064 fail an emissions test?
U0064 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 U0064 to fix?
Difficulty: hard. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will U0064 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.