Sign in to follow this  
Taxi501

P244B

Recommended Posts

T27 2.0d4d 160000mls, my ex taxi is now being used by my daughter, she drives short distances 3 - 5 miles at a time with the occasional 30+mile trip.

all warning lights are on with the fault code P244B,according to techstream the fault is dpf differential pressure too high .

tried doing a regeneration using the techstream and about 50 mile hard run on the motorway but still can’t clear the fault 

a few pictures of the techstream,

does it look like the dpf is blocked or would it be a faulty sensor ?

the car is in what feels like a half limp mode

67D3A0ED-2827-4D1C-AE51-D2F2B052063A.jpeg

E3FDEE6B-8781-4E48-9F89-9C07B457A7A8.jpeg

6E92F6F7-ED31-42D1-A025-D9808507BEF8.jpeg

3D7CC442-B9AB-4427-81B1-8063197F6358.jpeg

96066173-A034-4225-990C-E214E8130826.jpeg

408A1528-43C6-4256-A03B-C8D94D229C7F.jpeg

DF49B4B2-0ABA-4C2D-8611-BC55AC59F5BE.jpeg

Share this post


Link to post
Share on other sites

Your DPF is massively clogged, after a regen the PM Accumulation ratio should be 0% yours is 510%. it would appear your attempted regen was not successful, Toyota say:

PERFORM PM FORCED REGENERATION

  1. Clear the DTC and Exhaust Fuel Addition FB value by disconnecting the cable from the negative (-) Battery terminal or removing the EFI MAIN No. 2 fuse for 1 minute or more.

    Tech Tips

    • The accumulated PM volume stored in the ECM cannot be initialized using the intelligent tester.

    • To perform PM forced regeneration, it is necessary to perform initialization of the accumulated PM volume stored in the ECM.

  2. Connect the intelligent tester to the DLC3.

  3. Start the engine and drive the vehicle until the engine coolant temperature reaches 60°C (140°F) or more.

  4. Move the shift lever to N and set the parking brake.

  5. Turn the tester on.

  6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the DPF Rejuvenate (PM) / Data List / PM Accumulation Ratio.

  7. Perform the Active Test while the vehicle is driven at a constant vehicle speed within 50 to 100 km/h (31 to 62 mph) (transmission in 3rd gear) for more than 15 minutes.

    Tech Tips

    • While the "Activate the DPF Rejuvenate (PM)" Active Test is being performed, the accelerator opening angle should be kept as constant as possible.

    • When you start driving, "DPNR/DPF Status Reju (PM)" on the Data List displays "Compl". However, continue to drive the vehicle until "PM Accumulation Ratio" drops to 0%.

    • Once "PM Accumulation Ratio" drops to 0%, regeneration is complete.

  8. Continue to drive the vehicle until "PM Accumulation Ratio" drops to 0%.

    CAUTION:

    Be aware of excessive heat on and around the exhaust pipes during PM forced regeneration.

    Note

    If PM forced regeneration stops, repair the malfunction that caused it to stop, and perform it again to complete the operation.

    Tech Tips

    • PM forced regeneration completes in 15 to 40 minutes.

    • PM forced regeneration time changes depending on PM Accumulation Ratio and driving conditions.

    • A fail-safe stops PM forced regeneration if Catalyst Differential Press increases too much during regeneration

    • Exhaust Temperature B1S3 becomes 500°C (932°F) or more within 20 minutes of PM forced regeneration start.

    • PM forced regeneration will be stopped if the accelerator pedal is depressed during regeneration. In this case, PM forced regeneration needs to be performed again.

    • Even if PM forced regeneration stops while it is occurring, the intelligent tester displays Compl (complete) for DPNR/DPF Status Reju (PM).

  • Like 1
  • Thanks 1

Share this post


Link to post
Share on other sites

Thanks very much for the reply, I think you’re correct about the failed regen, I think the reason is because couldn’t clear the codes. The next time I get at it I’ll follow your instructions, hopefully it’ll work. Is the high differential pressure code the fault at all I wonder 

Share this post


Link to post
Share on other sites

60962204-82A9-4490-AA69-792340CE1605.thumb.jpeg.795b0b6778be13e8b44380053539a22f.jpegThanks Devon Aygo, I followed your instructions and got the regen done, on the way back on the motorway the accumulation ratio went up to 12% in about 15 miles, don’t know if that’s ok or not.

5BCB0B9A-C6B2-423D-B186-8284B024396B.jpeg

8118D495-BBA8-4CE1-AC19-B944E306E30D.jpeg

Share this post


Link to post
Share on other sites

Same fault has returned, a quick check with the Autel scanner returned the same code.

if the 5th injector housing is blocked would it put up a fault code ?

anyone got instructions on cleaning the 5th injector housing on the 2.0 d4d ??

I will get the car for a couple of weeks so hoping to clean out as much as possible. 

I’m thinking of trying a dpf cleaner such as Liqui Moly which can be done without removing the dpf, or, removing the dpf to get it properly cleaned by someone such as https://www.dpfservice.ie

Also, has anyone removed the complete egr unit for a full clean? I’ve cleaned some of it in the past ( I think the harder to remove part is the acceleration control unit which I didn’t touch) and the plastic manifold at the same time, both were covered in a dry soot but not blocked  

Share this post


Link to post
Share on other sites

Best info I've read in two years thank you, clear concise, and I hope straightforward. Thanks Devon , sincerely appreciated I hope it saves my 212,000km Avensis.

Otherwise , strip and clean (over here €80 to clean , not too sure if mines got a cat as well, so add on the removal, refit and gasket charges ?)

Rgds

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Club Hybrid Poll

  • 207 Hybrid Reliability

    1. 1. If you were to consider buying a Hybrid model over 5 years old, would you be worried about the reliability of the Hybrid system?


      • Not really as Hybrid systems are always reliable
      • Not if it had a Manufacturers Warranty on the Hybrid system
      • I would not buy a Hybrid model over 5 years old