2002 Toyota 4runner DTC error code P0115

nirvana

New member
Help with DTC error code P0115 on 2002 Toyota 4runner

My 4runner has 94K miles on it, and recently while driving I got the CEL. I went to auto-zone to read the error code, which came to P0115 (Engine Coolant Temp. Circuit Malfunction).

I have been driving it since then and noticed that the CEL light comes on intermittently. I also noticed that sometimes the engine seemed to rev up a little bit when I am idling at a stop light. The temperature gauge seems okay.

I had recently done the 90K mile service at the dealership, and also replaced all the belts and the water pump. It seems the problem started happening after that. I don't know whether it is just a coincidence or the dealership messed something up.

Does it cost a lot to replace the ECT sensor, or is the problem somewhere else? I have already spent quite a bit of money on the 90K service and timing belts. Is it an easy job? Do I need to go to the dealership, or any mechanic will do?

Any help and advice will be greatly appreciated.

-RJ
 
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