For the p0125 - coolant temp too low for closed loop - did you change the thermostat when you did the hg?
If I remember correctly, there's a wire clip on the temp sensor - squeeze it, and the detent should disengage.
The p0135 is for the heater circuit on the front o2 sensor - check the fuse, if that's ok, you can disconnect the leads (there's a plate back behind the engine where the front and rears go) and check the resistance, should be an ohm or so - measure between the 2 like-colored wires.
posted by 96.42.25...
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