PowertrainP0502

Caution

Severity: Caution - get it checked when you can

Vehicle Speed Sensor A Circuit Low Input

35 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 35

Brand	Code	Description	System
Ashok Leyland CV	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
BAIC Motor	P0502	No speed signal Brand	Powertrain
Mercedes-Benz	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
BMW	P0502	Vehicle Speed Sensor Circ. Low Input Brand	Powertrain
BYD	P0502	Vehicle speed sensor low Brand	Powertrain
Chery	P0502	Vehicle speed sensor low Brand	Powertrain
Daewoo	P0502	Vehicle speed signal Brand	Powertrain
DFFS	P0502	The vehicle speed sensor no signal Brand	Powertrain
DFFX	P0502	Vehicle speed sensor low Brand	Powertrain
DFXK	P0502	Vehicle speed sensor, no signal Brand	Powertrain
EOBD	P0502	Ātruma sensora 'A' ķēde zems Brand	Powertrain
Geely	P0502	Vehicle speed sensor low Brand	Powertrain
GM	P0502	Vehicle Speed Sensor A Circuit Low Brand	Powertrain
Great Wall	P0502	Vehicle speed sensor low Brand	Powertrain
Hafei	P0502	Vehicle speed sensor low Brand	Powertrain
Holden	P0502	Vehicle Speed Sensor Circuit Low Voltage Brand	Powertrain
Honda	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
Hyundai	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
Isuzu	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
Land Rover	P0502	Vehicle speed sensor - low input Brand	Powertrain
Mahindra	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
Maserati	P0502	Vehicle Speed Sensor 1 Circuit Low Brand	Powertrain
Mitsubishi	P0502	Vehicle speed signal Brand	Powertrain
Opel	P0502	Vehicle Speed Sensor A Circuit Low Brand	Powertrain
Peugeot	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
Porsche	P0502	Vehicle Speed Sensor A Circuit Low Input SAE	Powertrain
Proton	P0502	Vehicle speed signal Brand	Powertrain
Saab	P0502	Vehicle Speed Sensor A Circuit Low Brand	Powertrain
MG (SAIC)	P0502	Vehicle Speed Sensor A Circuit Low Brand	Powertrain
Subaru	P0502	Vehicle Speed Sensor Low Speed Brand	Powertrain
Suzuki	P0502	Vehicle Speed Sensor 'A' Circuit Low Brand	Powertrain
SWM Motor	P0502	Speed output circuit failure Brand	Powertrain
Tata	P0502	Vehicle Speed Sensor Lo Brand	Powertrain
Toyota	P0502	The vehicle speed sensor no signal Brand	Powertrain
Volkswagen	P0502	Vehicle speed sensor: signal too low; Implausible signal 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 2

These 7-character codes are manufacturer-specific variants of P0502 and may be reported by some scan tools.

Brand	Code	Description	System
Porsche	P050200	No description available	Powertrain
Mercedes-Benz	P050286	signal invalid - Battery temperature sensors - signal invalid Brand	Powertrain

6Related codes

Browse Pxxx codes or P050xx codes.