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Engine Fault Warning - Turbo Coolant Pump?

SouthWestern

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My daughter's 2010 RCZ came up the the "Engine Fault, Repair Needed" warning.
Taking it to her local independent, they found a couple of codes:
P2600 Peugeot Coolant Pump Control Circuit open
P2603 Peugeot Coolant Pump Control Circuit High

The garage checked that the pump was running, it was, and then cleared the codes.
However, the "Engine Fault, Repair Needed" warning was quickly back, and I guess the codes are back...but...
I have tried a couple of simple OBD readers, and they say no codes are stored. Is this to be expected?
Is there anything I should look at before handing it over to a garage?
Sounds like it might be a poor contact is some wiring, I thought I could look into that but so far haven't even found the pump!
Where is the pump and any suggestions what to look at for these codes?

Thanks!
 

misterx

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Must admit I have become somewhat sceptical about the Engine Fault - Repair Needed warning. Over the past few years it has come on several times and often there is nothing found wrong.

I gave up taking the car in when they started charging to diagnose, and found that the warning light often goes off of its own accord after a few days. There is no rhyme or reason. If the warning is there when the car is at the garage for something else, I get them to check and clear it, Hardly ever is there actually any work needing to be done.

The risk with this strategy is one day it will be a genuine problem and I might make it worse by ignoriing but that is a chance that I am willing to take given the age and mileage of the car.
 

SouthWestern

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Must admit I have become somewhat sceptical about the Engine Fault - Repair Needed warning. Over the past few years it has come on several times and often there is nothing found wrong.
misterx - that is the problem exactly. For predictable faults, this kind of warning system is fine. The faulty module is identified, the dealer changes it, job done. But many years of fault-finding (on computers) has taught me that faults are often not predictable; when things "go wrong" there is a clue in the name - things have gone wrong and that might also be the diagnostics system, or the power supply, or the wiring, or some gremlin that no-one ever thought of. i'll be checking that fuse (thanks frankvdb) shortly.
 

SouthWestern

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I have the HDi but found your error code on a Dutch site.
In that case they only had to clean the fuse. It also explains where the pump is located.
frankvdb thanks! Had not found this post myself and it sounds very relevant; I was intending t clean all contacts but had not thought about the fuse. Sure enough, it was coated in some sort of varnish. I cleaned this off...
The warning is still there, but I don't know if this is stored because of a momentary error days ago, or if it means there is still a problem.
BTW I did find the pump. It was much smaller than I expected it and though I looked at that component several times yesterday - I didn't think that was the pump!
So I took the plug off and tried to clean those contacts...
 

SouthWestern

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Now had the codes read at my local independent - they are usually very good.
Their reader also showed a P2603 - turbo coolant pump open circuit as a permanent fault.
So will probably get it in to have the pump changed.
Interesting though, I can hear the pump running after the ignition is switched off, it stops if I remove the 5A Fuse F21 (called: Fans control, Turbo pump (petrol), Valvetronic motor (1.6 l THP 200) ) so I think that proves the pump is running. Not sure how to know if it is running correctly though... it hums quite softly with a sort of ticking sound.
 

neilgsxr69

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There is a manufacturer recall on early 2010 cars for the turbo cooling pump and a ecu update to do with this, they’re not actually recalling cars just picking up on it when dealers get them in for servicing. Check with your local pug dealer and see if your car is one affected as you’ll get the repair free of charge.
 

SouthWestern

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There is a manufacturer recall on early 2010 cars for the turbo cooling pump and a ecu update to do with this, they’re not actually recalling cars just picking up on it when dealers get them in for servicing. Check with your local pug dealer and see if your car is one affected as you’ll get the repair free of charge.
Thanks, I found that reference earlier via a different post:, my daughter called her local dealer and they said the work has already been done.
 
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