Results 1 to 8 of 8

Thread: Engine light- P16A4-00

  1. #1
    Join Date
    Feb 2020
    Location
    Northern Territory
    Posts
    6
    Total Downloaded
    0

    Engine light- P16A4-00

    Hi all,

    Cannot seem to find a listing for this code:
    P16A4-00 J_14229_DTC_P16A4

    The MIL light is on and we are remote NT without access to a dealer. I have diagnostic experience (some) and a scanner but cannot track this code. The closest i found was a ECU issue but that doesn't help much...

    For additional context- the car has had issues with DPF since new and this has been replaced by the dealer before we came to the NT.
    Now the display states the engine will not restart after xxxxkms, and a few codes to explain that:

    1. P2BAE-00 NOx exceedance - NOx control monitoring system
    Permanent
    2. P2BAE-02 NOx exceedance - NOx control monitoring system
    Permanent
    3. P2BAF-00 NOx system driver inducement active
    Permanent

    I guess first step is to solve the first P16A4 code them move onto the NOx sensors.. Any help greatly appreciated!

    **forgot to add it is a 2017 disco sport diesel (L550)
    Last edited by mrhr33; 9th February 2020 at 01:10 PM. Reason: additional detail

  2. #2
    Join Date
    Dec 2011
    Location
    Forrestfield WA
    Posts
    1,305
    Total Downloaded
    0
    Sounds to me like it is very low on DEF (addblue). Have you followed the warnings and filled it up as requested by the dash messages?

    If you have filled it up and not used the bottle method detailed in the manual, it is possible that it is over full, which is treated the same as empty by the montitoring system and will not allow the engine to restart.

  3. #3
    Join Date
    Feb 2020
    Location
    Northern Territory
    Posts
    6
    Total Downloaded
    0
    Quote Originally Posted by BobD View Post
    Sounds to me like it is very low on DEF (addblue). Have you followed the warnings and filled it up as requested by the dash messages?

    If you have filled it up and not used the bottle method detailed in the manual, it is possible that it is over full, which is treated the same as empty by the montitoring system and will not allow the engine to restart.
    Thanks BobD,

    I will double check this. I know when the warning first started, it was topped up but the message would not go away. I will double check the manual for the correct procedure- It is odd i cannot get it to purge or respond with the scan tool- the reading level was 14.5/14.5L

  4. #4
    Join Date
    Feb 2020
    Location
    Northern Territory
    Posts
    6
    Total Downloaded
    0
    OK, pulled out 2-3L with a syringe and no better-

    Any other suggestions please? Can you completely drain the tank?

  5. #5
    Join Date
    Dec 2011
    Location
    Forrestfield WA
    Posts
    1,305
    Total Downloaded
    0
    Quote Originally Posted by mrhr33 View Post
    OK, pulled out 2-3L with a syringe and no better-

    Any other suggestions please? Can you completely drain the tank?
    I would ring a dealer to find out how to fix it. There is a dealer in Darwin.

    Definitely sounds like it was over full, which is a real trap on all cars with DEF, not just LR.

    if I can find anything I will post for you.

  6. #6
    Join Date
    Dec 2011
    Location
    Forrestfield WA
    Posts
    1,305
    Total Downloaded
    0
    One thing I read is that if you over fill with DEF a vacuum is created in the tank when the car is driven and this prevents the DEF being injected which turns on the engine light, as you have found.

    I haven't found out how to reset it after removing some DEF yet.

  7. #7
    Join Date
    Feb 2020
    Location
    Northern Territory
    Posts
    6
    Total Downloaded
    0
    Quote Originally Posted by BobD View Post
    One thing I read is that if you over fill with DEF a vacuum is created in the tank when the car is driven and this prevents the DEF being injected which turns on the engine light, as you have found.

    I haven't found out how to reset it after removing some DEF yet.
    Thanks again BobD,

    I had a technition send me the reset procedure but that failed- It was ign on for min 10 mins, then off and lock doors for min 4 mins, key on then start.... no good....

    My scan tool can purge the tank and injector but that will not even work.
    I am really interested in the first code P16A4-00

  8. #8
    Join Date
    Feb 2020
    Location
    Northern Territory
    Posts
    6
    Total Downloaded
    0
    Hi all,

    Well after a chat to a technician, the vehicle was listed as having a recall due to the ad-blue system having a wiring fault causing it to fail.... one of the symptoms= engine light

    Off it goes to the dealer via barge

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!