E36 ODB2 says Coolant Sensor is bad.

[BillDave121]

Hi, I have a 1995 318ic (E36) and the check engine light will not reset. I replaced the coolant sensor and tried to reset light...didn't work. Tried several times. Both old and new coolant sensors respond to temperature changes. Wiring in loom appears to be in good shape. All temperature gauge reading are normal and the car runs fine. My problem is that the car will not pass emissions with the check engine light on. Thanks for any help available, BillDave 121

[Lord Vader]

Have you tried an OBD scanner? Its possible that if the coolant sensor issue is your only problem then you can clear the code and turn off the light. Most auto parts stores have a scanner you can use for free.

[BillDave121]

Thanks for your reply. Please note title of original post. I am sorry that I did not elaborate on use of OBD2 but i used my Peake unit and also had BMW Dealer used their 10K$ machine to reafirm my reading. In fact, they tried to tell me I needed a new computer ( for max. $). I refuse to accept their analysis since every other function of the car works fine. BillDave121