PowertrainP046C

Caution

Severity: Caution - get it checked when you can

Exhaust gas recirculation (EGR) position sensor A range/performance failure

28 brands affected · Description from Toyota data.

Key terms: Catalytic converter: cleans the exhaust gases · EGR: exhaust gas recirculation, which cuts harmful gases · EVAP: the system that traps fuel vapour · Oxygen sensor: measures oxygen in the exhaust gas · Powertrain: engine, transmission and emissions

1What it means in plain English

This range covers emissions control (EGR, EVAP, oxygen sensors and the catalytic converter), but some manufacturers also use P04 codes for oil-pressure, brake-fluid and coolant-level warnings.

2Common causes

Clogged or faulty EGR valve
EVAP system leak (hoses, canister, fuel cap)
Faulty oxygen sensor
Ageing catalytic converter
Low oil, brake fluid or coolant (on some models)
Wiring or connector fault

3Can I drive?

Caution · drive with care

Do not assume this code is safe to drive. Check the description: if it names oil pressure, brake fluid, coolant, or a brake fault, stop safely and have it diagnosed before driving. Emissions-only codes (EGR, EVAP, catalyst) should still be checked before an emissions or roadworthiness inspection.

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 28

Brand	Code	Description	System
Ashok Leyland CV	P046C	No description available	Powertrain
BAIC Motor	P046C	Exhaust Gas Recirculation (EGR) valve position signal error Brand	Powertrain
Mercedes-Benz	P046C	No description available	Powertrain
BYD	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
Chery	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
Daewoo	P046C	Exhaust Gas Recirculation Circuit Malfunction Brand	Powertrain
DFFS	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
DFFX	P046C	Exhaust gas recirculation (EGR) sensor is unreasonable Brand	Powertrain
DFXK	P046C	Exhaust Gas Recirculation (EGR) valve position signal error Brand	Powertrain
EOBD	P046C	EGR-sensor 'A' krets område/ytelse Brand	Powertrain
Geely	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
GM	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
Great Wall	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
Hafei	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
Holden	P046C	Exhaust Gas Recirculation (EGR) Position Sensor Performance Brand	Powertrain
Honda	P046C	No description available	Powertrain
Hyundai	P046C	No description available	Powertrain
Isuzu	P046C	No description available	Powertrain
Land Rover	P046C	EGR Sensor 'A' Circuit Range/Performance Brand	Powertrain
Maserati	P046C	Exhaust Gas Recirculation Sensor 1 Performance Brand	Powertrain
Opel	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
Peugeot	P046C	No description available	Powertrain
Proton	P046C	No description available	Powertrain
Saab	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
MG (SAIC)	P046C	Exhaust Gas Recirculation Sensor 'A' Circuit Range/Performance Brand	Powertrain
Tata	P046C	No description available	Powertrain
Toyota	P046C	Exhaust gas recirculation (EGR) position sensor A range/performance failure Brand	Powertrain
Volkswagen	P046C	EGR sensor 1: 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.

5Related codes

Browse Pxxx codes or P046xx codes.