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Radiator Coolant Sensor

13K views 4 replies 4 participants last post by  Gate1  
#1 ·
Replaced my radiator with a ECP one back in 2020.

It failed a week ago under warranty, and was squirting coolant out the system so I’ve had it swapped and I thought it was fine.

Now all of a sudden I’ve had engine management light on and it’s showing P00B4-00 Radiator Coolant Temperature Sensor Circuit High Voltage.

Is this down to the sensor that comes with the radiator built in, or a different sensor? Seems like it’s gonna be a lot of effort, labour money and coolant replacement to have to swap the radiator again. If it is the sensor, can it be taken out and swapped with a replacement one or is it a solid part that should just be fully replaced?