PowertrainP1937

Caution

Severity: Caution - get it checked when you can

Generator shut-off: short to plus; Upper limit exceeded

15 brands affected · Description from Volkswagen data.

Key terms: Control module: a small computer that runs one part of the car · 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 15

Brand	Code	Description	System
Chery	P1937	Generator Shut-Off: Short to Plus Brand	Powertrain
Daewoo	P1937	No description available	Powertrain
DFXK	P1937	Generator Shut-Off: Short to Plus Brand	Powertrain
EOBD	P1937	A/F-sensorfel Brand	Powertrain
Geely	P1937	Generator Shut-Off: Short to Plus Brand	Powertrain
GM	P1937	No description available	Powertrain
Holden	P1937	No description available	Powertrain
Land Rover	P1937	No description available	Powertrain
Mitsubishi	P1937	No description available	Powertrain
Opel	P1937	No description available	Powertrain
Peugeot	P1937	No description available	Powertrain
Saab	P1937	No description available	Powertrain
Suzuki	P1937	A/F sensor Malfunction Brand	Powertrain
Tata	P1937	No description available	Powertrain
Volkswagen	P1937	Generator shut-off: short to plus; Upper limit exceeded 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 P1937 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P193700	Fehlereintrag Hybrid System Fehler 10 Brand	Powertrain
Sprinter	P193700	Fehlereintrag Hybrid System Fehler 10 Brand	Powertrain

6Related codes

Browse Pxxx codes or P193xx codes.