U0292 code meaning
Lost Communication With Drive Motor Control Module B
Network system Generic code U02xx codes Check engine light
What U0292 means
Electric and hybrid vehicles with a motor on each axle usually give the inverter of the second motor the address drive motor control module B. U0292 means the coordinating controller no longer receives its messages. Audi documents this for the 2019 e-tron quattro: bulletin 2055804 finds U029200 in the electric drive control unit J841 or the engine control unit J623, while the car refuses to become ready, limits the selectable positions and shows various warnings; the low-voltage harness of the rear motor chafes because of its routing, sometimes blowing fuses SJ7 or SD5. Mitsubishi's 2023 Outlander PHEV lists U0292-00 as lost communication with power drive unit B, the rear unit. Expect warnings, loss of drive on that axle or no ready state.
U0292 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 8 hours
- Clears after repairAfter a drive cycle
Symptoms of U0292
- Vehicle does not become ready to drive
- Drive system warnings, restricted gear selection
- Only one axle driven, reduced power
Common causes of U0292
- Most likelyLow-voltage harness of the second drive unit chafed
- PossibleBlown supply fuse of module B
- PossibleConnector at the inverter of module B loose or corroded
- Less likelyInverter or control module B internally failed
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor control module bVehicle bus wiring
What each part of U0292 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 U0292 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 U0292
What does U0292 mean?
U0292 means "Lost Communication With Drive Motor Control Module B". Electric and hybrid vehicles with a motor on each axle usually give the inverter of the second motor the address drive motor control module B. It is a generic code, so it means the same on every make.
Is it safe to drive with U0292?
Drive gently and only to a workshop. With U0292 the car can go into limp mode (reduced power) to protect itself.
Will U0292 fail an emissions test?
Yes, it can. U0292 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is U0292 to fix?
Difficulty: hard. A typical repair takes 1 to 8 hours of work. This is a job for a workshop.
Will U0292 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.