Check engine light came on about 2 weeks ago... code 1264.
Tested the relay and wiring and found that the resistance on the heater coil for the O2 sensor was very low (too low for a working heating coil).
Also found that the fuse had blown for the heater coil.
So I ordered a new O2 sensor and installed it.
I Put the fuse back in, let the DME reset by unplugging battery for 10 minutes. Started car up and no CEL.
Next time I started the car the CEL came on and it won't go out.
It's not intermittent; it's a constant glow.
Any ideas?
My plan for tomorrow is to check all +/- and ohms, but not sure what else could be wrong.
Tested the relay and wiring and found that the resistance on the heater coil for the O2 sensor was very low (too low for a working heating coil).
Also found that the fuse had blown for the heater coil.
So I ordered a new O2 sensor and installed it.
I Put the fuse back in, let the DME reset by unplugging battery for 10 minutes. Started car up and no CEL.
Next time I started the car the CEL came on and it won't go out.
It's not intermittent; it's a constant glow.
Any ideas?
My plan for tomorrow is to check all +/- and ohms, but not sure what else could be wrong.
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