Depollution system faulty And P0504

This is the place for all your Diagnostic related questions or advice.

Moderator: RichardW

Post Reply
xrocker2002
Posts: 18
Joined: 05 Jul 2020, 06:18
Location: United arab emirates
My Cars: Peugeot 308 2009 model is my car. Petrol turbo engine hatchback design

Depollution system faulty And P0504

Post by xrocker2002 »

A quick question..

Depollution system faulty And P0504 are inter-related??

FUEL INJECTOR CLEANERS are really useful for petrol Peugeot car??

What is the optimum speed for Peugeot 308 Turbo hatchback car for maximum mileage??
User avatar
GiveMeABreak
Forum Admin Team
Posts: 37005
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5646

Re: Depollution system faulty And P0504

Post by GiveMeABreak »

1) No, P0504 relates to the brake pedal switch - coherence fault between the 2 brake sensors detected under acceleration.
2) Generally speaking, around the 56-60 Mph. Once you go over this economy starts dropping, and at anything above 80+ mph and your economy will start to drop significantly more. This will depend on your engine and gearbox:- manuals get more mileage than an automatic. City driving is not so good as there is a lot of stopping and starting. Motorways or long roads are better so you can maintain a constant speed. Low rolling resistance tyres also make a difference that are correctly inflated, and not carrying a lot of unnecessary weight in the car also helps.
Last edited by GiveMeABreak on 18 Jul 2020, 14:11, edited 1 time in total.
Reason: Removed reference to Diesel Fuel cleaners
Please Don't PM Me For Technical Help

Marc
xrocker2002
Posts: 18
Joined: 05 Jul 2020, 06:18
Location: United arab emirates
My Cars: Peugeot 308 2009 model is my car. Petrol turbo engine hatchback design

Re: Depollution system faulty And P0504

Post by xrocker2002 »

Thanks for the reply
xrocker2002
Posts: 18
Joined: 05 Jul 2020, 06:18
Location: United arab emirates
My Cars: Peugeot 308 2009 model is my car. Petrol turbo engine hatchback design

Re: Depollution system faulty And P0504

Post by xrocker2002 »

As per your 2nd reply, Is it preferable to use Diesel Fuel injector cleaner for Petrol Car??
User avatar
GiveMeABreak
Forum Admin Team
Posts: 37005
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5646

Re: Depollution system faulty And P0504

Post by GiveMeABreak »

No!

Only use Petrol Injection system cleaners specifically for Petrol engines
Only use Diesel Injection system cleaners specifically for Diesel engines

I only mentioned the diesel cleaner specifically as it is important that IF you have a diesel car with a Diesel Particulate Filter, it is important to ensure it is suitable for these engines.

To avoid confusion, I've removed my reference to diesels in my original reply as it was confusing - sorry about that.
Please Don't PM Me For Technical Help

Marc
Post Reply