VOLVO
BECM-P0B4300 - Hybrid/EV Battery Voltage Sense "B" Circuit High. General Failure Information. No sub type information
System
Batteriesteuergerät (BECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
1 ModellV60 (2011–)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
The BECM monitors the voltage across the battery cells in the high voltage battery. The code is set when the voltage in cell monitoring B is too high. The cause may be incorrect charging, for example from an external cable, with the combustion engine running or through brake energy recovery, or a damaged battery.
Mögliche Ursachen
- Incorrect charging from the external charging cable, where the fault may lie in the on-board charger (OBC)
- Incorrect charging with the combustion engine running, where the fault may lie in the engine control module (ECM) or the high voltage generator (IGM)
- Incorrect charging through brake energy recovery, where the fault may lie in the electric rear axle (IEM)
- The high voltage battery is damaged
Was Sie tun können
- 1Read and note the fault code, clear it and road test to check whether it returns
- 2Has the car recently been charged from an external cable or driven with heavy brake energy recovery?
- 3Have a workshop read the fault codes in the charger, the engine control module, the high voltage generator and the electric rear axle
- 4Have a workshop with diagnostic equipment check cell monitoring B in the high voltage battery
- 5The high voltage system should only be handled by qualified personnel, so have a workshop carry out all work on the battery and other high voltage parts
Symptome, die Sie bemerken können4
- Red warning symbol and message in the display
- Charging of the high voltage battery stops or works poorly
- Drive modes PURE, SAVE and AWD disengage automatically or cannot be selected
- The combustion engine runs more often than normal in HYBRID mode
Was der Fehler beeinflussen kann2
- The high voltage battery cannot be charged
- Electric propulsion is not possible
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.