Coolant pump b circuit low
- Thread starter Nomad13
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A similar fault on this thread
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Open circuit normally means a broken wire so you potentially have a wiring fault or failing coolant pump.
I think that might be the auxiliary pump that keeps the EGR cool, if so that might start overheating if the pump has (or does) fail completely, hence the emissions light on the other thread I suspect.
Intermittent engine management system fault - EML on
Hi I did a bit of a drive on Saturday around 700 miles and this morning another 250 on the way home. After around 10 miles I had the flashing yellow coil indicator lamp that the manual refers to as an engine management fault . I then realised the van had lost power, had become spongey and lacked...
Open circuit normally means a broken wire so you potentially have a wiring fault or failing coolant pump.
I think that might be the auxiliary pump that keeps the EGR cool, if so that might start overheating if the pump has (or does) fail completely, hence the emissions light on the other thread I suspect.
Update *****
Went into the garage today. Coolant pump b open circuit issue solved, corroded wire, so wasn't sending signal to the ECU, which In turn made the DPF need a regen. After a rewire and a dpf regeneration via carista, all is well, took about 30min for full regeneration to he done, 2.5k to 3k revs in 4th on the motorway. My baby is back!!!
Went into the garage today. Coolant pump b open circuit issue solved, corroded wire, so wasn't sending signal to the ECU, which In turn made the DPF need a regen. After a rewire and a dpf regeneration via carista, all is well, took about 30min for full regeneration to he done, 2.5k to 3k revs in 4th on the motorway. My baby is back!!!
I thought it did a regen on its own and you can leave it at idle whilst it does a regen?
It would but because the egr wasn't kicking in as well, it couldn't regen, so sorted the wire then it did it
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