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Multiplexed additive pump

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649 views 4 replies 4 participants last post by  SLC  
L
#1 ·
Ok so I had the following fault diagnosed:
P15B300 Additive adding-Calculated additive level below the
minimum threshold
The garage topped up the Diesel Additive Fuel. Whilst driving away 5 minutes later the Engine repair warning flashed up and the spanner returned (no amber engine warning light though?)
I took it back and they then said it has two new codes....
P143496 Multiplexed additive pump-Multiplexed pump fault
P143500 Multiplexed additive pump-CAN fault or multiplexed
additive pump fault
They suggested I could be chasing a fault around here and suggested i get it remapped at a specialist garage or take to the dealer but they cant do that. Im not keen on that advice (remapping) but equally i dont want to give a dealer a blank cheque to try and resolve.
I did then start getting the Risk of Particular Blockage warning come up but that disappeared after a treatment of DPF cleaner into a tank of diesel but dont want to be adding a tenners worth of that at every refill.
Any suggestions would be very greatfully appreciated.
Its a 3008 1.6 hdi 2017 for reference. TIA
 
#2 ·
Remap delete will just block the dpf if not removed. If removed good chance it will fail MOT. Good chance the wiring to the pump is corroded and disturbing to fill tank or change bag has triggered the fault. Slight chance pump has failed. Second hand pumps are readily available and not that expensive and quite simple to swap
 
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#4 ·
Labrat OG said:
P143496 Multiplexed additive pump-Multiplexed pump fault
P143500 Multiplexed additive pump-CAN fault or multiplexed
Click to expand...
The DTC has multiple meanings, in the following general order.

Fuel additive level circuit low
Fuel additive system, incorrect value received by the CAN network
Fuel cap sensor/switch fault
Refrigerant temperature circuit range/performance
Additive pump fault
Fuel gauge fault
Faults in the fuel additive accuracy

Labrat OG said:
P15B300 Additive adding-Calculated additive level below the
minimum threshold
Click to expand...
If still present, it may mean they did not set the topped-up level in the system. This can happen if DTC become present or are present before the diagnostics operation to change the value.
 
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