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Check Engine Light Code P0125

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Grimis

20+ Year Contributor
1,096
12
Sep 5, 2003
Jersey Shore, Pennsylvania
Ok, lets start at the begining. Got the code, looked it up in the book. "Closed Loop temperature not reached, And something about fuel". Any ways, I did what the book said, Replace the Engine Coolent Temp sensor, and the Thermostat. Reset the ECU, fine for a day. then the next day i started it up, POP the CEL comes back on, so i go back to the book, says to check plug/wires, so i did, it seemed loose, so i made my own with quick connects. soild as a rock. Reset ECU, runs great for a day, and bam back on. So I looked and some say it can be the Front Upstream 02 sensor. Im like ok, $110 sensor could be doing it. Is there any way to test the 02 with out a pocket logger?? and I seen here today that it could be the wire from the #83 pin on the Ecu, if i was to run another one, what one on the ECTS does it replace. HELP!
 
welp , i got to digging some more, and found my volt tester, and went out and did what i found. The volt metter never moved from .02, stayed there threw the hole engine startup to opt temp, never moved, so its the O2 driving me nuts, $110 for the sensor.... :thumbdown fixing your self..... Priceless :thumb: :D
 
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