U0292: Kommunikationsverlust mit dem Steuergerät B für Antriebsmotor
Was zu tun ist
Expect much less power, and expect the car to handle differently. Your vehicle has motors on both axles; one has dropped out, so it is now driven by one end only. A car that was four-wheel drive and is suddenly not behaves differently in the wet, in snow, and under acceleration. Take real care.
Expect the braking to feel different too. A lot of the slowing you are used to comes from the motors rather than the brake pads, and with one motor gone there is less of it. If you normally drive with one pedal, the car will now coast further than you expect — leave more room and get used to it deliberately rather than finding out at a junction.
Drive gently and get it looked at rather than continuing a long journey.
Do not investigate this yourself, and do not touch anything with orange cabling. Orange marks the high-voltage system, and those voltages are lethal on contact. This needs somebody trained and equipped for high-voltage work.
Was dieser Code bedeutet
The second drive motor control module has stopped being heard from. See U0200 for the block's framing and U0289 for the high-voltage caution, which applies here in full.
A second drive motor control module means a second traction motor, and on the vehicles that have one — dual-motor electric cars, hybrids with motors on both axles, and some performance vehicles with a motor per wheel — that motor is doing a substantial share of the driving.
Losing it produces a vehicle that still moves and is markedly different, and both halves of that sentence matter.
It still moves because the remaining motor can drive the vehicle, which is a deliberate design property rather than luck.
It is different in ways worth anticipating. Power is sharply reduced. A dual-motor vehicle running on one axle has fundamentally changed its driven-wheel layout — a car that was four-wheel drive is now front- or rear-driven only, which changes how it behaves in the wet, in snow and under hard acceleration. And regenerative braking through the lost motor is gone, so the pedal feel and the amount of deceleration on lifting off will both change. On a vehicle where one-pedal driving is normal, that is a change to how the car slows down, and it is worth adapting to deliberately rather than discovering at a junction.
So the advice is: expect less power, expect different handling, and expect the brakes to behave differently. Drive it gently and get it seen.
The high-voltage warning is not boilerplate here. Traction motors and their inverters operate at voltages that are lethal on contact, and the cabling is orange to say so. Do not open covers, disconnect anything orange, or probe these circuits. This is work for somebody trained and equipped, and it is one of the few places where the right answer is to leave it entirely alone.
Wahrscheinliche Ursachen
Hier anfangen
- Korrodierter oder loser Stecker · einfach
- Datenbusleitungen beschädigt · mittel
- Versorgung oder Masse des Steuergeräts ausgefallen · mittel
Seltener
- Wasser in das Steuergerät eingedrungen · mittel
- Ein anderes Steuergerät zieht den Bus auf Masse · Fachwerkstatt
Symptome
Beteiligte Bauteile
Information, keine Handlungsanweisung
CarGeek ist ein Nachschlagewerk, kein Werkstatthandbuch. Die Seiten entstehen aus öffentlichen Quellen und aus dem, was andere festgestellt haben, nie aus den Serviceunterlagen des Herstellers; für Ihr konkretes Fahrzeug können sie daher falsch oder unvollständig sein. Ein Teil des Beschriebenen birgt echte Gefahren: Hochspannung, Kraftstoff unter Druck, gespeicherte Energie sowie heiße oder bewegte Teile.
Lassen Sie alles, wonach Sie handeln wollen, von einer fachlich geschulten Person anhand der herstellereigenen Vorgehensweise für Ihr Fahrzeug prüfen. Nichts hiervon ersetzt diese Vorgehensweise.
Erfahrungen der Community
Schreiben Sie den ersten Erfahrungsbericht dazu
Dazu wurde noch nichts veröffentlicht. Was immer Sie gefunden haben, ist es wert, aufgeschrieben zu werden — selbst eine Sackgasse erspart jemandem denselben Nachmittag.
Was einen Bericht lesenswert macht:
- Das Fahrzeug — Marke, Modell, Baujahr und Motor. Derselbe Fehler verhält sich auf jedem anders.
- Was Sie gemessen haben, nicht nur, was Sie getauscht haben.
- Was es tatsächlich behoben hat — oder dass nichts es behoben hat, was ebenso nützlich ist.
Anmelden oder ein Konto anlegen und eintragen, was Sie gefunden haben — zu U0292.