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Matt
Matt, Mechanical Engineer
Category: Car
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Experience:  BEng hons Mech engineering, in auto industry 22 years
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I have a Vauxhall Meriva and a code 55 warning come up, can

Resolved Question:

I have a Vauxhall Meriva and a code 55 warning come up, can you help
Submitted: 10 months ago.
Category: Car
Expert:  Matt replied 10 months ago.

Hello

this code relates to a clogged Particle filter ( DPF) and if the ECU thinks the DPF is blocked then it won't allow full engine power so I'd suggest;

taking the car for a long drive where you can keep the engine rpm up over 2000 rpm for around 30 mins this will get plenty of heat into the system and get the system into re-gen mode

if that doesn't help then consider

http://www.dpfcleaning.co.uk/

or even removing it completely as you'll still pass MOT's fine without it, the key thing is to have the ECU re-programmed so its no longer looking for it

http://www.dpfremoval.co.uk/

or

http://www.removemydpf.co.uk/

On cars where the DPF is removed then typically you get more power and more mpg as it restricts the exhaust even when new

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