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post #1 of 4 (permalink) Old 11-15-09, 12:36 PM Thread Starter
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Problemas with my ford focus 2001

Hello friends, i'm new over here i have a ford focus 2001 zts i having problems with the car i conected the computer and the computer give these codes

ALL DTC (CODES)
ENG MIL P0135
02S HEATER CKT
MALFUNCTION 1/1

ENG MIL P0141
O2S HEATER CKT
MALFUNCTION 1/2

ENG PENDING P0136
02S CKT MALFUNCTION 1/2

ENG NON-MIL P1000
OBD SYSTEMS READLINESS TEST NOT
COMPLETE

the mechanic says i have to change the oxygen senson but i don't know if these is the problem, please con you help me to know wha i can do.

thank you.
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post #2 of 4 (permalink) Old 11-15-09, 01:24 PM
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Re: Problemas with my ford focus 2001

Is fuse #18 under the hood okay?
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post #3 of 4 (permalink) Old 11-16-09, 05:15 PM Thread Starter
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Re: Problemas with my ford focus 2001

I already change the two sensors oxyen of the cars but the light it's always on and sometimes the light of abs put on only for a while.
that's in the box of the fuse, i have to check i tell you tomorrow thank you for your time...
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post #4 of 4 (permalink) Old 11-17-09, 05:59 PM
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Re: Problemas with my ford focus 2001

If the codes show that the O2 sensor(s) are causing the problem and the fuse is OK, I'd replace both the up and downstream.

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