PowertrainP1596

Caution

Severity: Caution - get it checked when you can

Speed Ctrl Switch Always Hi

13 brands affected · Description from GM data.

Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions

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

Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.

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 13

Brand	Code	Description	System
Chery	P1596	Powertrain Databus: Implausible Message from Level Control System Brand	Powertrain
Daewoo	P1596	Speed Ctrl Switch Always Hi Brand	Powertrain
DFXK	P1596	Powertrain Databus: Implausible Message from Level Control System Brand	Powertrain
EOBD	P1596	12V toide 2 Brand	Powertrain
Geely	P1596	Powertrain Databus: Implausible Message from Level Control System Brand	Powertrain
GM	P1596	Speed Ctrl Switch Always Hi Brand	Powertrain
Honda	P1596	HV Battery Current Sensor 2 Circuit High Brand	Powertrain
Isuzu	P1596	No description available	Powertrain
Peugeot	P1596	No description available	Powertrain
Proton	P1596	No description available	Powertrain
Saab	P1596	Speed Ctrl Switch Always Hi Brand	Powertrain
Subaru	P1596	AT Diagnosis Input Signal Circuit High Input Brand	Powertrain
Tata	P1596	No description available	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 3

These 7-character codes are manufacturer-specific variants of P1596 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P159600	Sensor Abgasdruck elektrischer Fehler Signalpegel Low Brand	Powertrain
Hyundai	P159600	If abnormal BMS signal is detected upon ECM initialization, ECM sets DTC Brand	Powertrain
Sprinter	P159600	Sensor Abgasdruck elektrischer Fehler Signalpegel Low Brand	Powertrain

6Related codes

Browse Pxxx codes or P159xx codes.