OBD-II code · Powertrain (generic, extended)
P2502 Charging System Voltage
The ECU detects an out-of-range charging system voltage without specifying high or low. Indicates a generic charging fault that requires further sub-code investigation.
Is it safe to drive with P2502?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyAlternator output fault
- PossibleVoltage regulator fault
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Alternator, Voltage Regulator, Battery
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.