PowertrainP045C

Caution

Severity: Caution - get it checked when you can

EGR B Control Circuit Low

27 brands affected · Generic SAE J2012 description.

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 · SAE J2012: the standard generic code list · 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 27

Brand	Code	Description	System
Ashok Leyland CV	P045C	EGR B Control Circuit Low SAE	Powertrain
BAIC Motor	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
BYD	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Chery	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Daewoo	P045C	EGR B Control Circuit Low SAE	Powertrain
DFFS	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
DFFX	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
DFXK	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
EOBD	P045C	EGR 'B'-styrkrets låg Brand	Powertrain
Ford	P045C	EGR B Control Circuit Low SAE	Powertrain
Geely	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
GM	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Great Wall	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Hafei	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Holden	P045C	Exhaust Gas Recirculation 2 Control Circuit Brand	Powertrain
Honda	P045C	EGR B Control Circuit Low SAE	Powertrain
Hyundai	P045C	EGR B Control Circuit Low SAE	Powertrain
Isuzu	P045C	EGR B Control Circuit Low SAE	Powertrain
Land Rover	P045C	EGR 'B' Control Circuit Low Brand	Powertrain
Opel	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Peugeot	P045C	EGR B Control Circuit Low SAE	Powertrain
Proton	P045C	EGR B Control Circuit Low SAE	Powertrain
Saab	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
MG (SAIC)	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Suzuki	P045C	Exhaust Gas Recirculation 'B' Control Circuit Low Brand	Powertrain
Tata	P045C	EGR B Control Circuit Low SAE	Powertrain
Toyota	P045C	EGR 'B' control circuit low 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 P045C and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P045C00	Low pressure Exhaust Gas Recirculation (EGR) driving H-bridge circuit short to battery (+) Brand	Powertrain
Mercedes-Benz	P045C11	EGR 'B' Control Circuit LowEs liegt ein Kurzschluss nach Masse vor. Brand	Powertrain

6Related codes

Browse Pxxx codes or P045xx codes.