Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $20 to $500
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P2500 Generator Lamp / L-Terminal Circuit Low High
The P2500 code means the voltage in the alternator L-terminal circuit is low, and the computer uses that circuit to know whether the alternator is charging. A bad regulator or a wire shorted to ground is the usual cause. Drive only as far as the shop, because a dead battery will stall the engine.