![]() ![]() The code related to your DSC Voltage concerns is "5DF4", and here is the BMW Fault Code Lookup Definition of that Code for your DSC_87 Module:ĥDF4 | DSC: Battery voltage too low open circuit | dsc_87 Summary per your Graph: Your battery had proper voltage (12.6V) BEFORE starting, had enough voltage to Crank Starter (2V Voltage Drop), engine started in 1.5 second or less, and Alternator began charging at 13.8V+ in ~ 6 seconds. The DURATION/ "doba trvání" of starter cranking was ALSO normal, ~ 1+ second. ![]() A 2-Volt "pokles napětí" or Voltage Drop is "normální"/ normal during Starter Cranking. That Voltage dropped to 10.4V during starter cranking. Your "Napětí modulu OBD" or OBD Module Voltage (Red Graph Line) was 12.6V BEFORE Start Button pressed. Your English is BETTER than many in US, and WAAAY better than my "Czech". ![]() so i think is good, but when i go to INPA Temperature and voltage, see on Voltage URef 0V and on Voltage terminal_30 too 0V, where can be problem please?.Have E90 325i 2005 2.5L. And when i scan for error codes geting 5DF4-Wiring supply voltage, battery have 12.5V few hours after ride and when starting car he go to 9.8V, and after to 14V. Today replaced him, check inpa and sensor working now but lights are after 18km ride still up. 3 lights come up (ABS,DSC and red HAND BRAKE) so i use diagnostic ISTA, and see bad rear left wheel speed sensor, in INPA see him not working too. ![]()
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