PowertrainP0731

Caution

Severity: Caution - get it checked when you can

Gear 1 Incorrect Ratio

41 brands affected · Generic SAE J2012 description.

Key terms: SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

The transmission is not achieving the correct ratio in first gear, which usually means it is slipping in that gear.

2Common causes

Low or dirty transmission fluid
Worn clutch packs or brake bands
Faulty shift solenoid
Valve body fault
Faulty speed sensor

3Can I drive?

Caution · drive with care

If the transmission slips or flares in first gear, stop driving and have it checked. If it feels normal, drive gently 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 41

Brand	Code	Description	System
Ashok Leyland CV	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
BAIC Motor	P0731	Gear ratio-1st gear Brand	Powertrain
Mercedes-Benz	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
BMW	P0731	EGS: Gear monitoring 1 Brand	Powertrain
BYD	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Chery	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Chrysler	P0731	1st gear Brand	Powertrain
Daewoo	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
DFFS	P0731	1st gear ratio Brand	Powertrain
DFFX	P0731	D1 speed ratio failure Brand	Powertrain
DFXK	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
EOBD	P0731	Käik 1 vale suhe Brand	Powertrain
Fiat	P0731	1st Gear Brand	Powertrain
Ford	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Geely	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
GM	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Great Wall	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Hafei	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Holden	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Honda	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Hyundai	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Isuzu	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Land Rover	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Mahindra	P0731	1ST GR FNCTN Brand	Powertrain
Maserati	P0731	Gear 1 Shift Incorrect Ratio Brand	Powertrain
Mazda	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Mitsubishi	P0731	Gear 1 incorrect ratio Brand	Powertrain
Nissan	P0731	A/T 1st signal Brand	Powertrain
Opel	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Peugeot	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Porsche	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Proton	P0731	Gear 1 incorrect ratio Brand	Powertrain
Renault	P0731	1ST GR Fnctn Brand	Powertrain
Saab	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
MG (SAIC)	P0731	Gear Ratio Fault 1 Brand	Powertrain
Sprinter	P0731	Gear 1 Incorrect Ratio SAE	Powertrain
Subaru	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Suzuki	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Tata	P0731	Gear 1 Incorrect Ratio Brand	Powertrain
Toyota	P0731	1st gear ratio Brand	Powertrain
Volkswagen	P0731	Gear 1: Incorrect Ratio 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 3

These 7-character codes are manufacturer-specific variants of P0731 and may be reported by some scan tools.

Brand	Code	Description	System
Hyundai	P073100	If 1st gear synchronization error is detected, PCM/TCM sets DTC Brand	Powertrain
Porsche	P073100	Se surgir o erro P072100 juntamente com o código de erro...P073500, a causa deverá ser uma bomba de óleo da transmissão com defeito mecânico Brand	Powertrain
SsangYong	P073100	Engaged gear implausible or transmission slipping (1st gear) Brand	Powertrain

6Related codes

Browse Pxxx codes or P073xx codes.