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Mazda 6 2.0TD 2006 - DPF fault, codes P242F, P2455 & P2458 - Fixed #

Posted by David Evason on August 6, 2013, 10:06 pm

Year of Manufacture *: 56
Engine Size and Code *: 2.0 RF (GG High Turbo)
( Optional) Fault Codes: P242F, P2455, P2458

Evening All,
Regular customer of mine, usually comes in every 2 or 3 months with DPF Light flashing and oil limit high on dipstick. Usually do oil & Filter change (low ash oil), Oil counters reset & static regen.
However this time DPF Light was flashing and he carried on driving till EML came on. Did the usual routine but this time it wouldn't let me do a static regen kept stopping about 30 seconds into trying to regen.
Obviously something is not letting it complete so checked Glow plugs, all shot so replaced. Checked EGR, seized, cleaned, checked and refitted. But no change in regen.
Plausability test on DPF Sensor shows 1v KOEO, Im use to this being 0.5v on most other systems.
Is this a usual plausabilty reading on mazda systems ?
Live data shows DPF Differential Pressure as 0.39 Kpa KOEO, surely this should be 0 ?
Ex Gas Differential Pressure Sensor Learning Value 12726.18 Kpa (What does this mean ?)
Live data DPF Differential Pressure 7.04 KOER 70.4 mbar again on other systems im use to a good DPF being 25 mbar or under KOER.
EGT Lower 110 degrees KOER
EGT Middle 222 degrees KOER
EGT Upper 141 degrees KOER
Thanks for any help guys just after a bit of info as this is a system that ive not had much experience with.

Re: Mazda 6 2.0 Td DPF

Posted by Keith Simpson <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1240' width='330' height='300' border=0 style='border:none;'> on August 7, 2013, 9:38 am, in reply to "Mazda 6 2.0 Td DPF"

Hi David, the oil level is crucial on these. With the DPF light flashing is the Traction Control light on, is it in limp.

Keith

Re: Mazda 6 2.0 Td DPF

Posted by David Evason on August 7, 2013, 11:11 am, in reply to "Mazda 6 2.0 Td DPF"
Edited by board administrator August 7, 2013, 3:24 pm

Hi & thanks Keith,
Oil level is correct and TC light off.

Re: Mazda 6 2.0 Td DPF

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on August 7, 2013, 1:03 pm, in reply to "Re: Mazda 6 2.0 Td DPF"
Kevin Apps

David.

Re-set counters, which ones ? with what scanner ?

Kev.

Re: Mazda 6 2.0 Td DPF

Posted by David Evason <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3433' width='330' height='300' border=0 style='border:none;'> on August 7, 2013, 3:14 pm, in reply to "Mazda 6 2.0 Td DPF"
David Evason

Hi Kevin,
Ive reset the oil level counters & the DPF Pressure Sensor. Using Solus Ultra.
Thanks

Re: Mazda 6 2.0 Td DPF

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on August 7, 2013, 4:23 pm, in reply to "Re: Mazda 6 2.0 Td DPF"
Kevin Apps

David

OK Is that all the re-set the solus is capable of ?

I have seen this before with-after market scanners, but IDS can sort it.

Kev.

Re: Mazda 6 2.0 Td DPF

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on August 7, 2013, 5:52 pm, in reply to "Re: Mazda 6 2.0 Td DPF"
Mark Carter

From what I've read above (and played with in my workshop) I agree with Kev, get it on IDS and go from there.

Mark

Modern cars, Its all wizardry and witchcraft

Fixed #

Posted by David Evason on September 25, 2013, 10:24 pm, in reply to "Re: Mazda 6 2.0 Td DPF"
Edited by board administrator October 2, 2013, 4:24 pm

Hi Gents,
Thanks for all the advice & help.I couldn't get hold of anyone with IDS near me. A definite future purchase I think.
I managed to get some further info on this system and managed a fix, it appears that 1v KOEO is a correct plausibility value for the DPF Sensor.
It appears that MIL Light Illuminated & Flashing DPF Light alongside codes P2458 & P242F is a DPF that's blocked.
The joys didn't end there though. 2 snapped temp sensors that were not cheap from Mazda £342+ Vat !!!! Managed to get some from a particular auction site for a decent price.
Again thanks for the help.
Can I get the title listed as a fix please as im unable to edit it thanks.
Dave

Re: Fixed #

Posted by David Evason on September 26, 2013, 10:11 pm, in reply to "Re: Mazda 6 2.0 Td DPF"
Edited by board administrator October 2, 2013, 4:24 pm

Heres some of the info that I found if it helps anyone else.

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