PowertrainP050A

Caution

Severity: Caution - get it checked when you can

Cold Start Idle Control System Performance

32 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

This range covers vehicle speed, idle and oil-pressure control, charging-system voltage, and brake-switch circuits.

2Common causes

Carbon build-up in the throttle body
Faulty idle air control valve
Faulty vehicle speed sensor
Faulty charging system or weak battery
Wiring or connector fault

3Can I drive?

Caution · drive with care

Codes in this range include oil-pressure, brake-switch and charging-system voltage faults. If the oil-pressure warning light is on, stop the engine as soon as it is safe and do not drive until it is diagnosed. If the battery or charging warning light is on, drive straight to a workshop: the car can stall when the battery runs flat. For any other P05 code, have the car diagnosed promptly rather than continuing to drive.

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 32

Brand	Code	Description	System
Ashok Leyland CV	P050A	Cold Start Idle Control System Performance SAE	Powertrain
BAIC Motor	P050A	Cold start idle intake control abnormal Brand	Powertrain
Mercedes-Benz	P050A	Cold Start Idle Control System Performance SAE	Powertrain
BYD	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
Chery	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
Daewoo	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
DFFS	P050A	Cold start control system performance failure Brand	Powertrain
DFFX	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
DFXK	P050A	Idle speed too low upon catalyst light-off Brand	Powertrain
EOBD	P050A	Kaldstarttomgangsstyringssystem ytelse Brand	Powertrain
Geely	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
GM	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
Great Wall	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
Hafei	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
Holden	P050A	Cold Start Idle Speed Performance Brand	Powertrain
Honda	P050A	Cold Start Idle Control System Performance SAE	Powertrain
Hyundai	P050A	Cold Start Idle Control System Performance SAE	Powertrain
Isuzu	P050A	Cold Start Idle Control System Performance SAE	Powertrain
Land Rover	P050A	Cold Start Idle Control System Performance SAE	Powertrain
Maserati	P050A	Cold start idle air control system performance Brand	Powertrain
Mitsubishi	P050A	ISC control Brand	Powertrain
Opel	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
Peugeot	P050A	Cold Start Idle Control System Performance SAE	Powertrain
Porsche	P050A	Cold Start Idle Control System Performance SAE	Powertrain
Proton	P050A	ISC control Brand	Powertrain
Saab	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
MG (SAIC)	P050A	Cold Start Idle Air Control System Performance Brand	Powertrain
Smart	P050A	Cold Start Idle Control System Performance SAE	Powertrain
Subaru	P050A	extended engine cranking Brand	Powertrain
Suzuki	P050A	Idle Air Control System RPM out of Range During Catalyst Heating Brand	Powertrain
Toyota	P050A	Cold start control system performance failure Brand	Powertrain
Volkswagen	P050A	Cold start idle air control system: malfunction; Open circuit 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 4

These 7-character codes are manufacturer-specific variants of P050A and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P050A00	Die Leerlaufdrehzahlregelung hat beim Kaltstart Funktionsstörung. Brand	Powertrain
Porsche	P050A00	Cold Start Idle Air Control System Performance Brand	Powertrain
SsangYong	P050A00	Cold start idle air control system performance Brand	Powertrain
Mercedes-Benz	P050A15	Die Leerlaufdrehzahlregelung hat beim Kaltstart Funktionsstörung. Es liegt ein Kurzschluss nach Plus oder eine Unterbrechung vor. Brand	Powertrain

6Related codes

Browse Pxxx codes or P050xx codes.