P0561 Ford

Ford P0561 OBD-II Trouble Code Definition:

P0561 Battery System Voltage

P0561 Ford OBD-II Trouble CodeDescription:

OBD Trouble Code P0561
System Voltage Unstable
What does the code mean? OBD-ii Code P0561 definition:
The battery supplies electricity to the ECM even when the ignition switch is OFF. This electricity allows the ECM to store data such as DTC history, freeze frame data, fuel trim values and other data. If the battery voltage falls below a minimum level, the ECM will conclude that there is a fault in the power supply circuit. The next time the engine starts, the ECM will turn on the MIL and a DTC will be set.
Symptoms Sumptoms of OBD code P0561
– Engine Light ON (or Service Engine Soon Warning Light) – Slow engine start – Low battery power
Causes Causes of the OBD-II code P0561
– Loose or missing alternator drive belt – Faulty alternator – Battery defective – Open or short system voltage circuit The Error code is generally activated on detection of the following conditions: The P0561 code is detected when there is an open in ECM back-up power source circuit