Error Code P1884

Hi,

I seen a few posts about this error code but none seem to be quite the same symptoms as mine. I have 2000 Discovery 2 td5 auto. When I start the car up I get the check engine light come on and flashing M & S lights. I've plugged in my nanocom I get the following error for the gearbox:

CODE P1884
CAN MESSAGE WFPDK (DKI) INVALID (FFH)
---
CODE P1884
CAN MESSAGE MD_IND INVALID
(FLAG F_TL_MES)

I cleared the codes with the engine off but the ignition on but shortly after the engine starts the errors are back. As soon as the error code appears the car goes into limp home mode. I also have a list of errors from the engine:

(1,8) MANIFOLD PRESSURE CIRCUIT, (LOGGED LOW).
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(2,7) DRIVER DEMAND SUPPLY PROBLEM, (LOGGED LOW).
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(2,8) AMBIENT PRESSURE CIRCUIT, (LOGGED LOW).
---
(9,6) EGR INLET THROTTLE OPEN LOAD, (LOGGED).
---
(13,6) EGR INLET THROTTLE SHORT CIRCUIT, (CURRENT).
---
(21,4) DRIVER DEMAND 1 OUT OF RANGE (LOGGED).
---
(21,5) DRIVER DEMAND 2 OUT OF RANGE (LOGGED).
---
(21,6) PROBLEMS DETECTED WITH DRIVER DEMAND (LOGGED).
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(25,4) DRIVER DEMAND 1 OUT OF RANGE (LOGGED).
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(25,5) DRIVER DEMAND 2 OUT OF RANGE (LOGGED).
---
(25,6) PROBLEMS DETECTED WITH DRIVER DEMAND (CURRENT).
---

I know some can be ignored, for example EGR as this is not fitted to my generation of D2. If any has any suggestions as to what could be causing this I would be keen to hear them. Thanks

Disconnect the Maf electrical plug and run it like that, take out the MAP/IAT and clean it. Check there are 13 threads between the vac can and the adjusting nut on the wastegate acutating rod on the turbo. And that the wastegate is moving freely.
then tell us if it makes any difference.

you may need to give us live data.

Hi, the EML + M & S warnings together with the limp mode are caused the the TPS input(so called driver demand) so pray to be the throttle not it's circuit so first of all replace the throttle pedal(which has teh sensor attached) with a known good one to rule it out... the first and third codes from your list have to do with the AAP(airbox) sensor and with the MAP sensor inputs... you can neglect the MAF if your's it's without EGR cos then the MAF it is no factor on Eu2 engines though the EGR was fitted on all modells so you must make sure it was bypassed by the PO otherwise if it's still there it can cause the pressure problems too

sierrafery said:

Hi, the EML + M & S warnings together with the limp mode are caused the the TPS input(so called driver demand) so pray to be the throttle not it's circuit so first of all replace the throttle pedal(which has teh sensor attached) with a known good one to rule it out... the first and third codes from your list have to do with the AAP(airbox) sensor and with the MAP sensor inputs... you can neglect the MAF if your's it's without EGR cos then the MAF it is no factor on Eu2 engines though the EGR was fitted on all modells so you must make sure it was bypassed by the PO otherwise if it's still there it can cause the pressure problems too

Click to expand...

Thanks for this. I checked the throttle outputs on the Nanocom, and throttle 1 was being a bit erratic in its output. So I’ve ordered a new pedal today and hopefully it (fingers crossed) that will sort the m&s issue out.
I’ll have a look at the Map tomorrow.

sierrafery said:

Hi, the EML + M & S warnings together with the limp mode are caused the the TPS input(so called driver demand) so pray to be the throttle not it's circuit so first of all replace the throttle pedal(which has teh sensor attached) with a known good one to rule it out... the first and third codes from your list have to do with the AAP(airbox) sensor and with the MAP sensor inputs... you can neglect the MAF if your's it's without EGR cos then the MAF it is no factor on Eu2 engines though the EGR was fitted on all modells so you must make sure it was bypassed by the PO otherwise if it's still there it can cause the pressure problems too

Click to expand...

Stanleysteamer said:

Disconnect the Maf electrical plug and run it like that, take out the MAP/IAT and clean it. Check there are 13 threads between the vac can and the adjusting nut on the wastegate acutating rod on the turbo. And that the wastegate is moving freely.
then tell us if it makes any difference.

you may need to give us live data.

Click to expand...

Thanks for this I’m going to give the Map a clean tomorrow. And have a look at the turbo and will update

Theworst said:

Thanks for this I’m going to give the Map a clean tomorrow. And have a look at the turbo and will update

Click to expand...

Try to use sensor cleaner, other cleaners leave a film on it which isn't good.

Thanks for your collective help. I've cleaned the sensors today and I'm down to the following error codes:

(9,6) EGR INLET THROTTLE OPEN LOAD, (LOGGED).
---
(13,6) EGR INLET THROTTLE SHORT CIRCUIT, (CURRENT).
---
(21,4) DRIVER DEMAND 1 OUT OF RANGE (LOGGED).
---
(21,5) DRIVER DEMAND 2 OUT OF RANGE (LOGGED).
---
(21,6) PROBLEMS DETECTED WITH DRIVER DEMAND (LOGGED).
---
(25,4) DRIVER DEMAND 1 OUT OF RANGE (LOGGED).
---
(25,5) DRIVER DEMAND 2 OUT OF RANGE (LOGGED).
---
(25,6) PROBLEMS DETECTED WITH DRIVER DEMAND (CURRENT).
---
all of which I put down to the disconnect accelerator pedal. Which, if the gods of Evri are with me, should be delivered tomorrow.

Would be nice to tell us the outcome though

Apologies. I’m still working on the throttle issue. The replacement pedal didn’t solve the issues. The error code is the same. Nanocom is still reading voltage totaling approximate 5v for driver demand 1 and 2, 3 is at zero. When the pedal is depressed voltages change accordingly, 3 remains at zero. I’ve now started trying to test the cabling. It’s slow work mainly due to weather.

see this https://www.landyzone.co.uk/land-ro...tion-with-a-three-month-old-new-pedal.361750/

sierrafery said:

see this https://www.landyzone.co.uk/land-ro...tion-with-a-three-month-old-new-pedal.361750/

Click to expand...

Thanks for this.