Sowa Posted February 24 Report Share Posted February 24 Hello, I live in Poland, Europe, I recently became the owner of a C-Max Hybrid from 2013 and, unfortunately, I am already having problems. My wife had an accident and since then I have errors that cannot be deleted: P26CA, P26D0 and C19f. Is there anyone who can advise me how to fix it? In my country there is little information about the C-Max Hybrid. Quote Link to comment Share on other sites More sharing options...
jestevens Posted February 24 Report Share Posted February 24 Based on some google searching these codes sound like water pump issues? Can you check the fuse, wire and connections to the water pump? Quote Link to comment Share on other sites More sharing options...
Sowa Posted February 25 Author Report Share Posted February 25 next week I will be at the mechanic and I will check it, there are 4 wires going to the pump, two are power supply and two are probably control, what should be the voltage on the control wires? Quote Link to comment Share on other sites More sharing options...
jestevens Posted February 25 Report Share Posted February 25 I'm sorry I don't have access to the tech specs, I hope a tech can help you but with any luck a water pump should still be the same diagnosis as usual anyway. Quote Link to comment Share on other sites More sharing options...
cr08 Posted February 26 Report Share Posted February 26 If memory serves (without looking at the service manual which I don't have access to at the moment) the water pump main signal is over a LIN bus connection back to the PCM. LIN is referenced to battery voltage. There's a few good resources on Google explaining it but it should still be a clear digital signal (you'd want an oscilloscope for this and not a basic multimeter/voltmeter/etc) with a 1 bit being bat voltage (or near it) and a 0 is around ~1V. Quote Link to comment Share on other sites More sharing options...
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