# Temp sensor error while no RPM
**URL:** https://community.ecumaster.com/t/temp-sensor-error-while-no-rpm/6029
**Category:** EMU PRO
**Tags:** request
**Created:** [June 16, 2026, 7:32pm UTC](https://community.ecumaster.com/t/temp-sensor-error-while-no-rpm/6029 "2026-06-16T19:32:13Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@solo](https://community.ecumaster.com/u/solo)
#### Post date: [June 16, 2026, 7:32pm UTC](https://community.ecumaster.com/t/temp-sensor-error-while-no-rpm/6029/1 "2026-06-16T19:32:13Z")
The CHECK channel gets value 1 while there are no Engine RPM.
According to Help section the value 1 is related to Coolant Temp sensor.
But my coolant temp is showing no errors on the sensor side and it looks ok.
My Fuel temp is picked from the Flex Fuel sensor and that one for some reasons is showing an error during no RPM (maybe due to lack of fuel flow). As as soon as engine is started the check error flag is removed.
Can we get an RPM threshold parameter that would avoid reporting Check error if there are 0 RPM’s
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### Author:  [@allihov](https://community.ecumaster.com/u/allihov)
#### Post date: [June 16, 2026, 9:29pm UTC](https://community.ecumaster.com/t/temp-sensor-error-while-no-rpm/6029/2 "2026-06-16T21:29:10Z")
Just a thought
maybe the 12v source you’re feeding to the sensor is only available while running?
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### Author:  [@bravo685](https://community.ecumaster.com/u/bravo685)
#### Post date: [June 17, 2026, 5:54am UTC](https://community.ecumaster.com/t/temp-sensor-error-while-no-rpm/6029/3 "2026-06-17T05:54:54Z")
I agree with @allihov when the ECU is on the flex fuel sensor needs powered or there is no data from the sensor.
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### Author:  [@solo](https://community.ecumaster.com/u/solo)
#### Post date: [June 17, 2026, 6:43am UTC](https://community.ecumaster.com/t/temp-sensor-error-while-no-rpm/6029/4 "2026-06-17T06:43:10Z")
might be, will look into this.