P0562 on Fiat: causes and affected models

Fiat 500 (1 fault), Fiat 500e (1 fault), Fiat 500X (1 fault), Fiat Punto II (1 fault) and Fiat Panda III (1 fault). Each fault has its own page with the affected years and versions, the symptoms and the repair cost.

System voltage low. The engine control unit has measured the car's supply voltage falling below a minimum value for a certain length of time. In the typical case, Mechanic Base and PartsAvatar speak of less than 10 V for more than 60 seconds with the engine running, and FleetRabbit, of between 9 and 11 V for about a minute. The threshold is set by each manufacturer: the manual for a Saab 9-5 diesel, for example, uses less than 4 V for more than 2.1 seconds with the ignition on. With the engine running, the normal voltage is around 13.5 to 14.5 V, and with the engine off, about 12.6 V. It is a generic OBD-II code: it means the same on a Fiat as on any other make.^{[1][2][3][4][5][7]}

As soon as possible. Almost all the sources that give an opinion advise against continuing to drive. Autodoc Club allows it only in a very limited way and only as far as the nearest workshop, because of the risk of a complete electrical failure while driving; Mechanic Base, although it rates it medium severity, says the best thing is to stop driving and repair the car because it can put you in a dangerous situation; iCARZONE admits short trips, but with a high risk of stalling and an instruction to repair it immediately; FleetRabbit says the vehicle should not be put into service because of the risk of stalling and of failure of the safety systems; and RACE, regarding an alternator that stops charging, explains that the car only runs on the battery's reserve for minutes or a few kilometres and that you should not try to reach your destination, because the engine can switch off and power steering and brake assistance can be lost. Carista rates it medium severity and does not say whether you can drive, and Ross-Tech notes, in the context of diagnostics on the Volkswagen group, that intermittent entries in cold weather, linked to a lower-capacity battery, can be ignored. If the battery warning light is on or the lights are losing brightness, stop as soon as it is safe and call for assistance.^{[1][2][4][6][7][8][9]}