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Diesel Particulate Filter Efficiency Below Threshold Bank 1


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Hi.

Just got this error coming up on my car (mk4 Titanium X sport 2.2). Can this be cleared with a motorway run at high revs or is the filter goosed?

The car is still driving as normal at the minute.

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What does this hose actually do? 

Everytime my car tries to regen, there is a burning smell and smoke coming from under the bonnet from the back of the engine. 

Could the two be related? 

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1 hour ago, paddyirishman said:

What does this hose actually do? 

Everytime my car tries to regen, there is a burning smell and smoke coming from under the bonnet from the back of the engine. 

Could the two be related? 

They do indeed connect to the DPF pressure sensor, but normally if the have burnt through you will get the EML showing on the dash

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definatly check the dpf pressure hoses at the dpf, so common for them to perish and break up. did one a few weeks ago on a mates car. we bodged it up by cutting off the perished bit and joined another bit of old hose that was simular bore to it.
cleared codes, been fine since.

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the pipes connect to either side of dpf so the sensor can detect a pressure difference in dpf. if blocked the difference in pressure exceeds a certian limit and this triggers the regeneration process.


you can get the hoses off ebay for around £35
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