If you want, tell me the Renault model/year and any freeze-frame voltage numbers and I’ll give a targeted troubleshooting sequence and likely parts to replace.
Renault uses Valeo and Bosch alternators. If the voltage regulator fails, it may output 18V+ or drop below 12V. dtc p0560 renault
Use a multimeter to check the battery with the engine off. It should read around 12.6V . If it’s below 12V, the battery may need replacing. If you want, tell me the Renault model/year
The code on a Renault indicates a System Voltage Malfunction . Essentially, the Engine Control Unit (ECU) has detected that the battery voltage is outside the normal range—typically either too low (below 10V) or too high (above 16V) while the engine is running. If you want
Unexpected stalling while idling or driving.