MoTeC Global Forum

Hi guys,
i have an error C-5 who appears suddently. as i know is C-5 error user stop.
what can i do to fix it?
Thanks

Error C-5 is usually a wiring error or fault with the sensor itself.

Mark explained this alot better in a previous post on these forums:

"The C5 error is given when the ECU cannot make sense of the infromation coming from the sensor and can be caused by incorrect set up, bad wiring or a dead sensor. Your calibration is right and if it is a new sensor I would assume it is the wiring. Use a multi meter to first check that the wires are going to the right place, the NTK sensors we sell have had the wire colours changed lately so this may cause some confusion. I have added a drawing with the new colours.

Once you are happy that you have checked the wires from the ECU all the way to the sensor are going to the right place make sure there is not too much resistance in each wire, there should be less than 0.5 ohms depending on length (usually about 0.2 ohms is normal).

You cannot do an air calibration until the sensor is working properly."

The only other thing could be a problem with your configuration file. ie Wrong sensor chosen in Adjust/Sensor Setup/Wide Band Lambda Setup.

Let us know if none of these work or if your still having problems.

Thank you,
i´m now sorted, the sensor was dead....