PowertrainP1798

Caution

Severity: Caution - get it checked when you can

Output speed sensor 2 circuit Range/performance

20 brands affected · Description from Toyota 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 20

Brand	Code	Description	System
BAIC Motor	P1798	Power battery relay initial status fault Brand	Powertrain
Chery	P1798	Transmission Output Speed Sensor 2 (G196): Implausible Signal Brand	Powertrain
Chrysler	P1798	Deteriorated Transmission Fluid Brand	Powertrain
Daewoo	P1798	Coolant Temperature Circuit Brand	Powertrain
Daihatsu	P1798	SB solenoid circuit Brand	Powertrain
DFXK	P1798	Transmission Output Speed Sensor 2 (G196): Implausible Signal Brand	Powertrain
EOBD	P1798	G anduri teave Brand	Powertrain
Geely	P1798	Transmission Output Speed Sensor 2 (G196): Implausible Signal Brand	Powertrain
GM	P1798	Coolant Temperature Circuit Brand	Powertrain
Holden	P1798	Clutch Closed Position Learn Malfunction Brand	Powertrain
Land Rover	P1798	No description available	Powertrain
Mitsubishi	P1798	G sensor information Brand	Powertrain
Opel	P1798	Coolant Temperature Circuit Brand	Powertrain
Perodua	P1798	SB solenoid circuit Brand	Powertrain
Peugeot	P1798	No description available	Powertrain
Porsche	P1798	Magnetventil H Kurzschluss nach Masse oder Unterbrechung Brand	Powertrain
Proton	P1798	G sensor information Brand	Powertrain
Saab	P1798	Coolant Temperature Circuit Brand	Powertrain
Subaru	P1798	Gear 1 Engine Brakes Brand	Powertrain
Toyota	P1798	Output speed sensor 2 circuit Range/performance 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.

5Related codes

Browse Pxxx codes or P179xx codes.