Page: 1 2 3 4 ... 23 24 25
|
|
Re: Particulate filter error resulting in MIL light
Dronus,
I have a feeling that it is some sort of a signal/communication failure between the ECU and the DPF which is preventing it from going through the regeneration cycle. If this is the case, then the new DPF will have exactly the same problem after a while.
The dealer needs to establish that the regeneration cycle is actually getting triggered before replacing the DPF and that is why I am assuming they're following the procedure of regeneration instead of just replacing your DPF.
|
|
30/Dec/2008, 10:00 am
|
|
popeclement
X-TRAIL FANATIC
Date Registered: 07-2008
Location: Perth, WA
TOTAL POSTS: 476
|
 | 
|
|
Re: Particulate filter error resulting in MIL light
DOn't think so Dronus - ie turbo doing more work.
I actually think despite the error logs suggesting blockage, the DPF is working ok if you are not seeing a lot soot behind. However I could be wrong - on my wife's Rexton (yes well she likes it) which has a 2.7 turbo diesel with no DPF, one does notice a lot of smoke under v heavy load - I actually had it dyno'd and it puts out the correct kW/nm but hell that unburnt fuel is just going out the back. The whole idea of the DPF is to cut down this unburnt emission.
Therefore I think your engine is running fine - you have not noticed any drop off in power and driveability except for the electronics inhibiting the cruise.
Still an interesting fault!
---
X-916, VW Golf 90TSi manual, limestone grey, no extras
2008 TL dc i, manual, twilight; full set bash plates, jaos strut bar
- traded
|
|
30/Dec/2008, 1:12 pm
|
|
|
|
Re: Particulate filter error resulting in MIL light
Dronus,
I have read into this a bit further and the entire procedure (including how to initiate regeneration of the DPF by the dealer) is also described here:
quote:
SERVICE REGENERATION
SERVICE REGENERATION : Description INFOID:0000000001530744
Service Regeneration is performed with CONSULT-III to reduce particulate matter in DPF. Service Regeneration
should be performed in the following cases.
• ECM enters fail-safe mode because the amount of particulate matter in DPF reaches the specified level.
NOTE:
When ECM enters fail-safe mode because the amount of particulate matter in DPF reaches the specified
NOTE:
After ECM replacement, go directly to Throttle Valve Closed Position Learning procedure.
Do not perform Throttle Valve Closed Position Learning Value Clear procedure.
level, check whether or not DTC is stored in ECM. In the case of DTC stored, perform the Diagnostic Procedure
for the DTC.
• ECM is replaced.
NOTE:
Based on the signal from sensors ECM measures the amount of particulate matter in DPF and stores the
value in EEPROM (Electrically Erasable Programmable Read Only Memory). When ECM is replaced as
new one, there is a difference between the actual amount of particulate matter and the value stored in new
ECM, because the value stored in new ECM is initialized one. In the case above, ECM can not perform
It clearly states that the ECU adapts to the A/F Sensor 1 to control the regeneration process of the DPF, which means that the dealer needs to trouble-shoot your Air:Fuel Ratio Sensor which may not be giving the correct command to the ECU to start the regeneration process of the DPF and the wrong Air:Fuel ratio could also explain your low fuel reading as it is not being gathered correctly by the ECU.
If your dealer follows the above page exactly, they will find the cause of the problem for sure. All of this should be done under warranty. there is no question about that.
|
|
30/Dec/2008, 1:18 pm
|
|
Page: 1 2 3 4 ... 23 24 25
|
Especially at 8500km. If the service regen fails i guess we go full circle and they replace the DPF or investigate why its not working. I see both sides 
