P0128 - Any know what this is?

[avninja]

P0128 P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) 14

on a 2002 esprit.

Funny this code is not setting of the check engine light, but it is in the system and I can't seem to clear it with my OBD II reader.

I mean Ican't even clear it for a second.

refuses to delete.

thanks

Andrew

[SwissV8]

P0128 P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) 14

on a 2002 esprit.

Funny this code is not setting of the check engine light, but it is in the system and I can't seem to clear it with my OBD II reader.

I mean Ican't even clear it for a second.

refuses to delete.

thanks

Andrew

<{POST_SNAPBACK}>

Hi Andrew

I don't know the meaning of this code, but I did have a very similar experience with my 02 V8. see my post.

To cut a long story short, the ECU needed to re-learn the output of some sensors. Until I performed a very special ECU learning procedure, I couldn't clear the error code at all with my OBD software.

Ask your Lotus dealer to check for updates from Lotus - that's where my Lotus dealer found the solution.

Good luck!