PowertrainP010300

Caution

Severity: Caution - get it checked when you can

is set when MAFS output voltage above 1000μsec is detected for more than 4.98 sec. This code is due to excessive output voltage from sensor component or poor connection in sensor circuit

2 brands affected · Description from Hyundai data.

Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · Powertrain: engine, transmission and emissions

1What it means in plain English

This code is in the fuel, air and oxygen sensor range, which also includes coolant temperature faults.

2Common causes

Dirty or faulty mass air flow sensor
Vacuum or intake air leak
Weak fuel pump or clogged fuel filter
Faulty fuel injector
Faulty oxygen sensor
Wiring or connector fault

3Can I drive?

Caution · drive with care

Have it diagnosed if the engine runs badly or the code keeps returning. Because this range includes coolant temperature sensors, watch the temperature gauge: if it climbs into the red, or the engine overheats or stalls, stop safely and get professional help.

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 2

Brand	Code	Description	System
Hyundai	P010300	is set when MAFS output voltage above 1000μsec is detected for more than 4.98 sec. This code is due to excessive output voltage from sensor component or poor connection in sensor circuit Brand	Powertrain
SsangYong	P010300	High HFM sensor signal (circuit short) 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 P010xx codes.