PowertrainP046A

Caution

Severity: Caution - get it checked when you can

Catalyst Temperature Sensor 1/2 Correlation

19 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 19

Brand	Code	Description	System
Ashok Leyland CV	P046A	No description available	Powertrain
BAIC Motor	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
BYD	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
Chery	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
DFFS	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
DFFX	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
DFXK	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
EOBD	P046A	Sensor suhu katalis 1/2 korelasi bank 1 Brand	Powertrain
Geely	P046A	ABS operation Brand	Powertrain
GM	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
Great Wall	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
Hafei	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
Hyundai	P046A	No description available	Powertrain
Isuzu	P046A	No description available	Powertrain
Land Rover	P046A	Catalyst Temperature Sensor 1/2 Correlation_ Bank 1 Brand	Powertrain
Peugeot	P046A	No description available	Powertrain
Saab	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
MG (SAIC)	P046A	Catalyst Temperature Sensor 1/2 Correlation Brand	Powertrain
Toyota	P046A	Catalyst Temperature Sensor 1/2 Correlation 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 P046A and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P046A00	Rear exhaust temperature sensor signal implausible Brand	Powertrain

6Related codes

Browse Pxxx codes or P046xx codes.