Catalytic Converter Fault Symptoms & Problems

The Catalytic Converter is part of the car Exhaust System system. We have 5 associated problem symptoms connected to it.

We also have 62 owner problems that mention it.

5 Symptoms of Catalytic Converter Problems
We have 62 owner submitted problems mentioning the Catalytic Converter

Showing the latest 10, see more problems here

7
responses
Fuel pump relay not triggering.

Car won't start. Traced to fuel pump relay not operating. Replacement relay makes no difference but removing top of rel...

2008 Skoda Octavia 1.9 tdi
Posted: Nov 6, 2020
8
responses
Rumbling under feet and middle of car

When driving from start funny rumbling noise under feet and down middle of car when idling no noise ?

2004 Citroen Xsara Picasso Dears Picasso desire petrol auto.
Posted: Aug 20, 2020
1
response
Fan comes on too quick

my fan,it kicks in within 10 minutes of driving the car had the problem checked out and the guy replaced the temperature...

2009 Peugeot 308 1.4
Posted: Jan 17, 2020
7
responses
Engine Management Light On

The engine management light is on. When tested, comes up with a message 'Bank 1 Oxygen Sensor' . But it is not the ox...

2014 Ford Fiesta 1L Eco-Booster
Posted: Sep 17, 2018
2
responses
Catalytic Converter, Alignment, & EPC too

2011 Polo owned from new, petrol, local commuting only. On way home warning lights started - the wheel alignment/tractio...

2011 Volkswagen Polo
Posted: Aug 8, 2017
1
response
Control indicator for exhaust

Engine like shape light has come on on dashboard what should i do .Can i still drive car without damadge.

2007 Vauxhall Zafira
Posted: Feb 21, 2016
3
responses
Engine Management Light flashing and staying on

Car is stuttering whilst being driven. Car is also jumpy when idle at traffic lights, why is it doing this?

2011 Vauxhall Corsa 1.2 sxi
Posted: Nov 4, 2015
1
response
Dash light

Hi i have done the peddal test on my car and got a code p0303 the car is not in limp mode it starts ok its sounds a bit ...

2003 Vauxhall Astra 1.6 man
Posted: Aug 1, 2015
1
response
Dash light

Hi i have done the peddal test on my car and got a code p0303 the car is not in limp mode it starts ok its sounds a bit ...

2003 Vauxhall Astra 1.6 man
Posted: Aug 1, 2015
10
responses
Ecu

hi, can anyone give me some advice on ECU problem/s! car developed a fault where i could not rev up the engine, test on...

2004 Vauxhall Zafira 1.6 manual
Posted: Apr 6, 2015
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