DPF Particulate Trap - ECM 2002

[grass hopper]

there are modified pipes and sensor to stop moisture being drawn into the sensor.

[7050man]

Originally Posted by jimmyy2000

My s40 experiences the same issue - limp mode - every now and then. So annoying. Took it to the main dealer but no problem found. The problem happened today once again and I took it to an independent volvo specialist I found recently, did a diagnostic check, got the error code saying 'particulate trap (low signal) permanent fault', and they reckon a thorough clean of the particulate trap will solve the issue. I'll post an update once it's done and see what is the outcome.

I understand the frustration the limp mode causes and I even thought of selling the car. But given its pretty image and comfy seat, it'll be nice to get it fixed.

My suggestion to damo99 is to definitely get the fault message read out and decide what step to take.

Just buy a new sensor. It's probably that. This assumes that car has had dpf changed according to spec and that car isn't just used for popping down to shops (ie give it a blast down the motorway once in a while)

If you go to Ford and get it there you'll save £15 on Volvo part and it takes a few minutes to fit.

I had two of these on my 2.0D first at about 50 k miles the next at 101k miles. Incidently same error read by Volvo dealer in course of diagnosis.

[grass hopper]

Originally Posted by 7050man

Just buy a new sensor. It's probably that. This assumes that car has had dpf changed according to spec and that car isn't just used for popping down to shops (ie give it a blast down the motorway once in a while)

If you go to Ford and get it there you'll save £15 on Volvo part and it takes a few minutes to fit.

I had two of these on my 2.0D first at about 50 k miles the next at 101k miles. Incidently same error read by Volvo dealer in course of diagnosis.

post # 11 for repeat replacements.

modified pipes.

[robcru1]

Hi, My 2005 V50 2.0d is coming up with the same fault every 3 days or so it goes into limp mode and brings up ECM-2002 Particulate filter below threshold bank 1.
According to my service records the filter was changed at 70000 and the car has now done 112000, i inspected the sensor on the side of the abttery and its is a Ford part so that has been replaced previously (don't know when) but i did get moisture out of it when i inspected. Is it likel;y to just be the sensor failed again due to the moisture ingress or am i looking at the filter again.
I also have had my additive taqnk topped up about 10000 miles ago and forced a regeneration of the filter the other day by following the handbook instructions.
Please help.

[Clan]

This is most likely the pressure sensor yes , and all of them have FORD on them ....
When changing the sensor always change the pipes as well as they can get restricted , expensive but its a proper job then .. you can prove it is the sensor if you are able to rear out the pressure via the OBD system should be 0 with ignition on and around 8 when idling and increase from there when you rev the engine ..

[robcru1]

Thanks for that, i have already purchased a new sensor from Volvo today (£82) and will fit it tomorrow, i have heard about changing the pipes but i have not purchased them as yet i may remove and clean thoroughly whilst doing the sensor.

[robcru1]

I have fitted the new sensor and thoroughly cleaned out all the pipes, and so far so good not had the fault code come back on and not gone into limp mode.
Fingers crossed

[V50?4DJ]

I have a V50 2.0D which dropped into limp home periodically, but always when more power was requested via the accelerator. This led to an incident that could have led to a fatality. Overtaking an articulated lorry which was in a shortish crawler lane whilst coming out of FossBridge travelling north, the vehicle suddenly dropped into 'limp home' with no warning messages -or any advanced warning. I could not pull past the lorry and only just managed to get in behind the lorry before the crawler lane dissapeared at the top of the hill. One second later and I could have been deposited in the oncoming traffic lane and the lack of visiblity due to the steep hill meant that any oncoming vehicle would have had little distance to try to brake. I could have been killed.

This design is fearfully dangerous and Volvo (and maybe Ford and a few other manufacturers perhaps) should be ashamed of themselves for allowing a design like this onto the market. The software should not allow the drop into 'limp home' from this cause to happen in this abrupt and highly dangerous way.

Taking advice from Volvo (clearly the problem is known to them!), the sensor and stainless pipes where changed and the fault has not reoccured for three years. A scan through this and other forums will show countless occurences of the DPF sensor failing.

I tried complaining about the design directly to Volvo in Sweden, but they directed the complaint back to Volvo UK who said they could not help as the repair was not done by Volvo. What a slippery bunch. I have recently been made aware of the Vehicle Safety Defect Report and will be lodging one about this software design with the VOSA.

After suffering this Volvo design problem I began to look more carefully at the V50 design - first finds - no brake wear warning lights, no built in priming system for the diesel fuel system, glow plugs that can't be replaced without moving the engine off its mounts - and the list grows. I will never buy another Volvo.

[laurieh]

Originally Posted by 7050man

Change the DPF pressure diferential sensor first. It's easy to access, costs less than £100 from a ford dealer (but quote number on the side first as this is a Ford no.). Volv wanted £115 for same part.

Then when replaced, drive for approx 20 - 30 miles, retart and car will be fine.

I had two of these fail over 110k miles and second time waited until symptom was almost a solid fault before Volvo dealer confirmd almost no output from sensor ityself.

After disconnecting and checking sensing pipes, I replaced sensor.

fault gone. I suspect that this is a weakness regards the part itself. The Ford main dealer, had five in stock, so they obviously see the same.

Hi,

I have a V50 2.D 2005 (55 plate)

Interesting post this, I have put a thread on hear regarding my issue's. Rev's struggling to go above 3000rpm, seems like I have a non turbo is very sluggish at all times and struggles to get above 60mph up hill. I have removed and cleaned the EGR pipe but not the engine part of EGR???, or could it be linked with DPF sensor.

Cheers

[7050man]

In limp mode, car won't rev beyond 2800rpm and will feel reasonably normal below 1800rpm.

As I've said many times on this forum, the 2.0 D Euro 4 engine with DPF will probably have either a differential pressure sensor solid fail or intermittant fail at some point within 100k of new.

Mine had two go over 110k.

You mention 3000 rpm and this possibly may be something different. Air in fuel lines can also give drop off in power at this engine speed, but symptom is not the same as limp mode.

The only way to verify if car is in limp mode, is to get codes read and take it from there.
Good luck.