Hi All I'm at a dead end, I replaced the thermostat as it was leaking coolant so I went all out and replaced new thermostat new water pump and pulley and coolant pipe to water pump, now after 3 seconds temperature goes high fan kicks in full speed, cleared fault codes and tried bsi reset, bled correctly now faults codes P023B and P023C Additional coolant pump, I checked the wiring as it says short to ground and short to B+ so I changed the turbo additional coolant pump and the friction pulley for the main pump, I have tried refitting the old stat back but still same fault STOP engine fan going nuts water pump won't engage when you leave running, codes come straight back rechecked wiring again can't find anything wrong, I'm in the process of getting another ecu to clone. I've now also ordered a genuine thermostat but my old one which was working now has the same fault showing additional pump but after this I might give up any ideas from anyone would be appreciated.
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