Question about 1999 Volvo C70

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What is tyhe casue of fault ciode 722 and 1618?

What is the cause of fault code 722 and 1618?My speedometer goes wacky and I lose power

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  • jsfpm Feb 05, 2010

    is it dangerous to drive with this code until I can get the part?

  • jsfpm Feb 05, 2010

    is it dangerous to drive the car until this is fixed?

  • jsfpm Feb 05, 2010

    can you tell me if it is safe to drive this car until I can get it replaced on Monday?

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P0722 and P1618 are both transmission related fault codes.
P1618 is the transmission control module requesting that the check engine light be turned on to alert you to the fact you have a transmission problem, the P0722 is the code that indicates the fault, this codes definition is the output speed sensor has an erratic signal, this would cause the electronic speedometer to act up and that is the problem I am sure, replace the speed sensor, it is on the transmission case, it should have a 2 wire connector going to it.

Posted on Feb 05, 2010

  • yadayada
    yadayada Feb 05, 2010

    yes it is 100% safe to drive until next year if you don't mind the speedo acting up

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