Network, generic

U0292 Lost Communication With Drive Motor Control Module B

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

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.

Likely causes

Low-voltage harness of the second drive unit chafed
Blown supply fuse of module B
Connector at the inverter of module B loose or corroded
Inverter or control module B internally failed

Symptoms

  • Vehicle does not become ready to drive
  • Drive system warnings, restricted gear selection
  • Only one axle driven, reduced power

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–4,000
Time1–8 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

drive motor control module bvehicle bus wiring

Related codes

U0110U029BU029CU0593

References: static.nhtsa.gov, mitsubishitechinfo.com, law.cornell.edu.