PowertrainP1259

Caution

Severity: Caution - get it checked when you can

Electronic stability control (ESC) master cylinder pressure signal is invalid

25 brands affected · Description from Toyota data.

Key terms: Stability control: helps stop the car skidding · 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 25

Brand	Code	Description	System
Ashok Leyland CV	P1259	No description available	Powertrain
BAIC Motor	P1259	oil inlet control valve oil pressure control failed Brand	Powertrain
BYD	P1259	Linear oxygen sensor circuit short to power Brand	Powertrain
Chery	P1259	Coolant Circulation Valve (N214): Short to Ground Brand	Powertrain
Daewoo	P1259	Immobilizer to PCM Signal Error Brand	Powertrain
DFFS	P1259	Electronic stability control (ESC) master cylinder pressure signal is invalid Brand	Powertrain
DFXK	P1259	Coolant Circulation Valve (N214): Short to Ground Brand	Powertrain
EOBD	P1259	Højtrykspumpens ydeevne Brand	Powertrain
Geely	P1259	Coolant Circulation Valve (N214): Short to Ground Brand	Powertrain
GM	P1259	Immobilizer to PCM Signal Error Brand	Powertrain
Great Wall	P1259	Firing order cylinder 6 electrification time and maximum value comparison fault status Brand	Powertrain
Holden	P1259	High Pressure Fuel Pump Performance Brand	Powertrain
Honda	P1259	No description available	Powertrain
Isuzu	P1259	No description available	Powertrain
Land Rover	P1259	No description available	Powertrain
Mahindra	P1259	No description available	Powertrain
Mitsubishi	P1259	No description available	Powertrain
Opel	P1259	Immobilizer to PCM Signal Error Brand	Powertrain
Peugeot	P1259	No description available	Powertrain
Porsche	P1259	Lambdasonde hinter Kat Bank 1 Brand	Powertrain
Proton	P1259	No description available	Powertrain
Saab	P1259	Immobilizer to PCM Signal Error Brand	Powertrain
SWM Motor	P1259	Linear oxygen sensor circuit short to power Brand	Powertrain
Tata	P1259	Rail Pressure Control - Trim High And Flow High Brand	Powertrain
Toyota	P1259	Electronic stability control (ESC) master cylinder pressure signal is invalid 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 1

These 7-character codes are manufacturer-specific variants of P1259 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P125900	Pressure regulation: max trim (rail pressure gouvernor) in high fuel condition Brand	Powertrain

6Related codes

Browse Pxxx codes or P125xx codes.