1.4hdi additive pump problem.

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Bobby12122
Posts: 4
Joined: 22 Apr 2022, 11:55

1.4hdi additive pump problem.

Post by Bobby12122 »

Hi.

I've got these two codes.

P1435 - multiplexed additive pump. CAN network fault or pump.

P1434 - multiplexed pump, pump fault.

So thought it was the additive pump so took it from the additive tank (mines the bag one) and hooked the pump up to a battery source. The motor works and is pumping the liquid up and through its outlet port. So I stuck it back on the car.

Tried clearing the codes and didn't work. Can this problem cause the car go into limp mode and anyone know what next steps I can take?

Thank you
wheeler
Posts: 5801
Joined: 21 Sep 2002, 19:07
x 428

Re: 1.4hdi additive pump problem.

Post by wheeler »

Really need a wiring diagram next to check if the pump is getting the right supplies/signals.
Bobby12122
Posts: 4
Joined: 22 Apr 2022, 11:55

Re: 1.4hdi additive pump problem.

Post by Bobby12122 »

Thank you for the response. Do you happen to know where I can find a wiring diagram for it?