2008 Focus “Engine Malfunction”?

fouga
New Member

Posts: 18

2008 Focus “Engine Malfunction”? Apr 7, 2021 23:25:32 GMT 1 via mobile

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Post by fouga on Apr 7, 2021 23:25:32 GMT 1

Ongoing issue with a 2008 Ford Focus 1.6 Ghia Petrol.

The ‘Engine Malfunction’ and ‘Acceleration Reduced’ lights are coming on randomly. The MAF sensor was cleaned and the air filter renewed. The lights still show randomly.

The OBD code reader is showing code P0101 when the warning lights are on. No code shows when the lights are off.

Any suggestions folks? 🤔

2008 Ford Focus 1.6 Ghia, 2010 Opel Astra 1.4S, 1978 Opel Manta 1.9SR Berlinetta, 1984 Opel Monza 3.0 E CPE Coupe, 1962 Berini M21 Autocycle

trickydicky
Tea Maker

Posts: 860

2008 Focus “Engine Malfunction”? Apr 8, 2021 0:10:49 GMT 1

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Post by trickydicky on Apr 8, 2021 0:10:49 GMT 1

A manufacturer specific scan tool might give you a better DTC to work with

If your EOBD tool captures "freeze frame" data post it up for us to analyse

It will give an idea what the MAF was doing comparitively when the P0101 sets

Finally use this calculator with your scantool data to see if you have a correctly reporting system

autotech.network/calculators/maf-calculator

Last Edit: Apr 8, 2021 0:12:35 GMT 1 by trickydicky

rhyds
Moderator

Posts: 4,230

2008 Focus “Engine Malfunction”? Apr 8, 2021 9:56:37 GMT 1

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Post by rhyds on Apr 8, 2021 9:56:37 GMT 1

I'd not bother with a basic code reader for a Ford, just get hold of an ELM327 adaptor like this

www.ebay.co.uk/itm/Black-USB-Modified-ELM-327-Elmconfig-Forscan-Fits-Ford-Focus-Mondeo-ELMCONFIG/181457166623?hash=item2a3fb0a11f:g:ZMwAAOSwEK9T0Utc

And then download the Forscan software to a PC

forscan.org/home.html

That should give you live data that Tricky has (correctly) pointed out you'll need to diagnose this issue.