Powertrain
generic / SAE
P2501
Generator Lamp/L-Terminal Circuit High
The L-terminal feedback from the alternator reads above the upper limit — short to supply or open ground side. Charging diagnostics cannot run cleanly.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 01
Possible causes
- L-terminal shorted to supply high
- Alternator regulator failed medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–800 €
- Estimated time: 0.5–3 h
- Component: alternator
- Component: charging warning lamp wiring
- MIL / check engine light
Sources
References
sae:J2012