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2004 Ford Focus SVT Question: Check engine light giving me codes PO141 AND p0135

 

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ebond796, 2.0L 4 Cylinder DOHC, Mansfield, TX, April 26, 2012, 08:53
 Rookie

Daughter hit a bump in the road killing the rear 02. to be safe I replaced both. Can't get rid of these codes used factory parts

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  • Answer #1

    Greg's Orange Auto (13188 Answers) , Orange, CA - (714) 361-9386
    globalhelper April 26, 2012, 11:47
     Master

    WHICH 02 DID YOU REPL CAUSE YOUR CODE IS FOR BANK 1 SENSOR 2 CIRCUIT MALFUNCTION.POSS WIRING ISSUES.PO135 IS BANK 1 SENSOR 1 HEATER CIRCUIT IN THAT 02

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    ebond796, April 26, 2012, 13:11
     Rookie

    I replaced both. I have two codes present as posted. Is this all related to the Bank 1 sensor?

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    globalhelper, April 26, 2012, 13:15
     Master

    no one code is b1 sensor #2 and the other is b1 sensor #1 you have 2 seperate sensor codes.b1s2 code is a malfunction code and po135 is the heater circuit on b1 sensor 1. look at the wiring on b1s2 sensor and the heater part may be burned out on b1s1

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    ebond796, April 26, 2012, 13:24
     Rookie

    b1s2 was the original problem. It was initially struck underneath by the drive axle. It has been replaced with a factory part. I decided to be vigilant and replace b1s1 with a new part. Now I know the meaning of if its not broke don't fix it. Car has around 115,000 miles. What about a vacuum leak??

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  • Answer #2

    chinasinoy April 27, 2012, 03:24
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     Journeyman

    check your wiring harnesses. You may have left them laying on the exhaust or manifold and the wires burned through and it just happened to be the heater wires. What size engine do you have? If you have a V6, disregard my previous post because the fuse would take out any bank 2 sensors too. But if it's a 4 banger, the fuse could be u're problem...

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