VOLVO
ECM-P056268 - System Voltage Low. Algorithm Based Failures. Event information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsV40 (2013–), V40 Cross Country (2013–)
Show models by year and engine (2)
What does this fault code mean?
This is an event-based information code in the system voltage algorithm, and it is meant as information. The ECM checks the voltage supply from the battery to the control module while the ignition is on, and the code is set only when the test conditions are met.
Possible causes
- Contact resistance in connections
- The charging system is not working
- Damaged battery
What you can do
- 1Check that the fuses are intact
- 2Check the battery connections for contact resistance and oxidation
- 3If you have diagnostic equipment: read the battery voltage in live data with the engine running and see whether it changes once the engine runs
- 4If the connections are in order, have a workshop test the battery and the charging system
Symptoms you may notice2
- The engine does not start and the starter motor cranks
- The engine stalls while driving, hard to tell when it happens
General guidance for car owners. Diagnosis on the car can point to a different cause.