BodyB1493

Caution

Severity: Caution - get it checked when you can

Generator f-terminal circuit high

15 brands affected · Description from GM data.

Key terms: Control module: a small computer that runs one part of the car

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 generator (alternator) field terminal circuit is reading high, so charging may be reduced or stopped.

2Common causes

Faulty alternator
Damaged wiring or connector
Blown fuse
Poor ground connection
Body control module fault

3Can I drive?

Caution · drive with care

If the battery or charging warning light is on, drive straight to a workshop: the car can stall when the battery runs flat. Avoid unnecessary electrical loads.

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 15

Brand	Code	Description	System
Mercedes-Benz	B1493	No description available	Body
BYD	B1493	F ABG(2)PS squib short to BATT Brand	Body
Chery	B1493	F ABG(2)PS squib short to BATT Brand	Body
DFFX	B1493	F ABG(2)PS squib short to BATT Brand	Body
Geely	B1493	F ABG(2)PS squib short to BATT Brand	Body
GM	B1493	Generator f-terminal circuit high Brand	Body
Great Wall	B1493	F ABG(2)PS squib short to BATT Brand	Body
Hafei	B1493	F ABG(2)PS squib short to BATT Brand	Body
Hyundai	B1493	No description available	Body
Land Rover	B1493	Pedestrian airbag deployment control Brand	Body
Mitsubishi	B1493	F ABG(2)PS squib short to BATT Brand	Body
Peugeot	B1493	No description available	Body
Proton	B1493	F ABG(2)PS squib short to BATT Brand	Body
Saab	B1493	Generator F-Terminal Circuit High Brand	Body
Toyota	B1493	No description available	Body

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 1

These 7-character codes are manufacturer-specific variants of B1493 and may be reported by some scan tools.

Brand	Code	Description	System
Hyundai	B149300	CAN message from the OCS ECU is not received, SRSCM sets DTC Brand	Body

6Related codes

Browse Bxxx codes or B149xx codes.