Just had car scanned came up with coolant pump open circuit . Been advised to change coolant temp sensor first. What does anyone think or has anyone had same error. Car drives perfect and heats up fine .
The coolant pump is underneath just in front of the sump and beside the rigid intercooler to engine pipe.
Very common on 2009 cars.
What years yours?
If you check the number on the side of your original pump and Google it you'll buy a genuine delivered from Germany for about £90
A genuine from the dealers or Tps is about £140
2009! Is my car ok to drive then also is it worth changing the coolant temp sensor first or not. Fault reappeared second time I started it after fault was cleared.
Car is safe to drive and it's nothing to do with the temp sensor.
It's the after run coolant pump which circulates coolant when you turn the key off.
Depending on engine temp whether it's needed or not.
Ok short term but don't forget about it
It's worth a look at the connection but it'll be fine.
If you try to remove the whole bracket it's a pain
If you remove the 3 torx screws it's a 15 minute job.
Although 1 of the screws I gripped with vice grips to remove as there's no room to get a bit on it.
Once the undertrays off you'll see it's straight forward
Just had undertray off and disconnected pump. When reconnecting I dont think it the plug was clipped in properly. Ive cleared fault and have started car 5 or 6 times in last 2 hours with no eml on .... yet ! Would this fault hsppen straight away or reappear in time
The fault will return next time the ecu wants to run the pump.
Usually after a long run when coolant temps high.
Wouldn't get excited as it will return.
The pump seizes in the housing.
I personally wouldn't waste money. I'd get the number from your original pump and source a genuine one and between parts and labour save yourself £150
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