PowertrainP2501

Caution

Severity: Caution - get it checked when you can

Generator Lamp/L-Terminal Circuit High

32 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

Safety: This code relates to the charging system. The battery may go flat and the car may stall.

1What it means in plain English

The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.

2Common causes

Sensor or actuator fault
Wiring or connector fault
Vacuum or intake leak
Fuel or ignition problem
Control module fault

3Can I drive?

Caution · drive with care

The electrical system may fail and the battery may go flat, risking a stall. If the battery or charging warning light is on, drive straight to a workshop.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 32

Brand	Code	Description	System
Ashok Leyland CV	P2501	Roof Parking Lights. Right Rear Side. Short Circuit To Ground Brand	Powertrain
BAIC Motor	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Mercedes-Benz	P2501	Generator Lamp/L-Terminal Circuit High SAE	Powertrain
BYD	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Chery	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Daewoo	P2501	Alternator L Terminal High Voltage Brand	Powertrain
Daihatsu	P2501	AC generator fault Brand	Powertrain
DFFS	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
DFFX	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
DFXK	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
EOBD	P2501	Generatorlampa/L-terminalkrets hög Brand	Powertrain
Geely	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
GM	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Great Wall	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Hafei	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Holden	P2501	Generator L-Terminal Circuit High Voltage Brand	Powertrain
Hyundai	P2501	Generator Lamp/L-Terminal Circuit High SAE	Powertrain
Isuzu	P2501	Generator Lamp/L-Terminal Circuit High SAE	Powertrain
Land Rover	P2501	Generator lamp terminal - circuit high Brand	Powertrain
Mitsubishi	P2501	Alternator L terminal high Brand	Powertrain
Opel	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Perodua	P2501	AC generator fault Brand	Powertrain
Peugeot	P2501	Generator Lamp/L-Terminal Circuit High SAE	Powertrain
Proton	P2501	Alternator L terminal high Brand	Powertrain
Saab	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
MG (SAIC)	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Smart	P2501	Generator Lamp/L-Terminal Circuit High SAE	Powertrain
Sprinter	P2501	Generator Lamp/L-Terminal Circuit High SAE	Powertrain
Subaru	P2501	Generator Lamp/L-Terminal Circuit High SAE	Powertrain
Tata	P2501	Generator Lamp/L-Terminal Circuit High Brand	Powertrain
Toyota	P2501	Generator Lamp/LTerminal Circuit High Brand	Powertrain
Volkswagen	P2501	SAE: Generator Lamp L-Terminal Circuit High Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 2

These 7-character codes are manufacturer-specific variants of P2501 and may be reported by some scan tools.

Brand	Code	Description	System
Hyundai	P250100	If the difference between battery voltage from the battery sensor and ECU input voltage is greater than 3V for more than 1 min., ECM sets DTC Brand	Powertrain
SsangYong	P250100	Alternator L-terminal signal shorted high Brand	Powertrain

6Related codes

Browse Pxxx codes or P250xx codes.