Coolant Temp Sensor

[teamshaw]

Hi

I've had a CEL that keeps coming back after repeated services. Just ran an auto scan and it threw:

16500 - Engine Coolant Temp. Sensor (G62): Implausible Signal

I'm pretty sure the sensor has been changed a few times in recent services trying to chase the issue. Could there be any other causes? Is the sensor easy for me to source and replace myself?

Cheers
Ben

[h100vw]

You can check the sensor out with a multimeter. The resistance will drop as the water temp increases. Could also be bad wiring?

The part number will be on it and you can get one from ebay pretty easily I am sure.

Gavin

[Dukzzz]

Sensor is easy to source, and easy to get too.

If i recall correctly its the sensor that sits on the coolant flange at the back of the head ( for longitudinal motors), or in this case on the very right end side of the motor for the polo.

If the sensor has been changed a few times already, it may indicate as mentioned by Gavin, wiring issues. Or even the sensor that has been replaced be the incorrect one? U can call up a VW dealer, and quote them the G62 code, and they should be able to search it up on ETKA to your VIN, and if their nice about it, provide you with a part number specific to your VIN.