Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2502:00GENERATOR SYSTEM: MALFUNCTION IN VOLTAGE GENERATED BY GENERATOR
Manufacturer communications
4Original wording in English
MAZDA
Some customers may notice the charging lamp turns on while driving. Upon inspection, DTC P2502:00 PCM (Malfunction in voltage generated by generator) is stored in memory. This may be caused by resistance between the circuit board and ground. When high intensity electrical current passes through, the ground terminal position may …
MAZDA
SOME CUSTOMERS MAY EXPERIENCE ONE OF THE FOLLOWING TWO SYMPTOMS: 1. SYMPTOM (MAZDA6 ONLY) A. WARNING MESSAGE “I-ELOOP INSPECTION REQUIRED” IS DISPLAYED IN THE INSTRUMENT CLUSTER INFORMATION DISPLAY WHILE DRIVING. B. THE MASTER WARNING LIGHT WILL BE ILLUMINATED. C. DTC P1794:00 (CAPACITOR (I-ELOOP) SYSTEM: CAPACITOR (I-ELOOP) MAL…
MAZDA
SOME CUSTOMERS MAY EXPERIENCE ONE OF THE FOLLOWING TWO SYMPTOMS: 1. SYMPTOM (MAZDA6 ONLY) A. WARNING MESSAGE “I-ELOOP INSPECTION REQUIRED” IS DISPLAYED IN THE INSTRUMENT CLUSTER INFORMATION DISPLAY WHILE DRIVING. B. THE MASTER WARNING LIGHT WILL BE ILLUMINATED. C. DTC P1794:00 (CAPACITOR (I-ELOOP) SYSTEM: CAPACITOR (I-ELOOP) MAL…
DODGE
CHECK GAUGES LAMP ILLUMINATES FOR ALTERNATOR CHARGING WITH DTC P2502, P2503, OR P2509. *KB
Check vehicle applicability
8A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Dodge | RAM 2500 ↗ | 2007 |
| Dodge | RAM 2500 ↗ | 2006 |
| Dodge | RAM 3500 ↗ | 2007 |
| Dodge | RAM 3500 ↗ | 2006 |
| Mazda | MAZDA2 ↗ | 2021 |
| Mazda | MAZDA3 ↗ | 2014 |
| Mazda | MAZDA6 ↗ | 2015 |
| Mazda | MAZDA6 ↗ | 2014 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.