quagsy

Maintainance Of Finness

Recommended Posts

anyone know what these two faults are and how they can be fixed?

P0646 and P0420. its for a fiesta finess 53 plate..

Share this post


Link to post
Share on other sites
 

Hi

according to google A/C Clutch Relay Control Circuit Low is the p0646 fault code

And P0420 Catalyst System Efficiency Below Threshold

Jamie

Share this post


Link to post
Share on other sites

Just Thinking. Your car does not have air conditioning as it was not an option on the finesse

So where that code comes from is anyones guess

Jamie

Share this post


Link to post
Share on other sites

Hi

To test whether the catylytic converter is working correctly you will need an emmisions test and the car needs to be plugged into a diagnostics machine or code reader.

How well does the car drive.

What lead you to check for fault codes in the first place.

How many miles has the car done and is it serviced according to manufacturers service schedules.

Jamie

Share this post


Link to post
Share on other sites

my car has only done 40,000 miles. it paed ssed its emmisions test on the mot which only happined a few weeks ago and i got they codes when i had it serviced last week. the car drives well, it just kinda vibarates now and again when stationary. i got it serviced in arnold clark so i'm not sure which way it was serviced.

Share this post


Link to post
Share on other sites

have these 2 codes just appeared or has someone recently read the fault codes from the car out of curiosity?

it could be that these are old codes that were never wiped from the memory...

personally i would clear them and see if they return.

Share this post


Link to post
Share on other sites

they have been there for a few weeks now but the car is running fine. they came up again once initially being cleared.

Share this post


Link to post
Share on other sites

Hi

Make sure you have the radio code to hand.

Are you mechanicly minded.

If so

Disconnect the positive terminal from the battery and leave it dis connected for 30mins- 1 hour.

This should remove any fault codes.

Jamie

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now