Powertrain
generic / SAE
P2503
Charging System Voltage Low
The ECU detects that battery voltage during operation stays below the regulated target. The alternator output is insufficient to maintain charge under load, eventually leading to battery depletion.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 03
Possible causes
- Weak alternator output high
- Faulty voltage regulator medium
- Slipping drive belt low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 150–800 €
- Estimated time: 0.5–3 h
- Component: alternator
- Component: voltage regulator
- Component: battery
- Component: drive belt
- MIL / check engine light
Sources
References
sae:J2012