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1998 Volvo S70 Question: po code 174- o2 sensor too rich...what's up



, 2.3L 5 Cylinder Turbo, Sacramento, CA, June 15, 2013, 20:15

mechanic says po302,304,305 300 all connected.

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    Prestige Auto Works (218 Answers) , Sacramento, CA - (916) 550-9579
    Prestige Auto Works June 17, 2013, 11:19

    Do you have all those codes? The 300's are for cylinder misfires. Having a misfire too long or too bad will also cause damage to your catalytic converter. There are oxygen sensors before and after the catalytic converter to more accurately monitor your air and fuel mixture. We are diagnostic specialist and we also specialize in Volvo repair. Bring it for diagnostics and an accurate answer to your vehicles faults.

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