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Auto Repair advice needed

deathnote666deathnote666 Registered User regular
edited February 2010 in Help / Advice Forum
I have a 98 plymouth grand caravan with a service engine light on. I got a code check and it said that the Oxygen sensor circuit heater was malfunctioning. Bank 1 Sensor 2.

What do you guys think is the real problem?

deathnote666 on

Posts

  • XaquinXaquin Right behind you!Registered User regular
    edited February 2010
    Oxygen sensor circuit heater was malfunctioning. Bank 1 Sensor 2

    I'd just get it fixed. Especially if it's your only mode of transport.

    Xaquin on
  • RUNN1NGMANRUNN1NGMAN Registered User regular
    edited February 2010
    There's no way to know without actually running the diagnostic for that code. Maybe the sensor's bad. Maybe something else is going on that's making the sensor malfunction. Error codes are just error codes, they aren't an indication of what actually needs to be fixed.

    RUNN1NGMAN on
  • CycophantCycophant Registered User regular
    edited February 2010
    If you're knowledgeable with vehicles, you can try d/c and reconnecting the oxygen sensor to see if it clears up the problem, or check the sensor itself to make sure it isn't damaged or dirty. If its not that, you may have to get it replaced.

    Keep in mind though that nines times out of ten, a "check engine" light is related to emissions and/or performance. So it may not be an absolute priority to get fixed - you may just see a drop in engine performance, or gas mileage. It's (unfortunately) not like that check engine light is tied to anything critical like "Your timing belt is about to let go" or "You're leaking coolant" or "You're about to lose a tire". That being said, some newer or more expensive vehicles have it tied to things like a low oil level sensor and other such important things. So it's something to keep in mind.

    Cycophant on
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  • deathnote666deathnote666 Registered User regular
    edited February 2010
    Sorry to say but I am not knowledgeable about cars.

    A diagnostic at a garage or dealership would be $40-$80 so I would like to avoid it if necessary.
    It is actually a family member's van so they have been talking to the dealerships/garages. One of them says it could be the catalytic converter and half a dozen other things.

    My question is the legitimacy of their claims about the cat. converter ($400+ repair).

    Note that they haven't actually seen the car yet.

    deathnote666 on
  • FatsFats Corvallis, ORRegistered User regular
    edited February 2010
    It's probably related to the cat in some way. Sensor 2 wold be the downstream sensor, which basically sits behind the cat to monitor its function. Chances are the sensor is bad or the cat isn't doing its thing anymore.

    As the function of the car goes, neither of these things is super important. A bad downstream sensor won't affect your mileage, as only the upstream sensor is used for fuel adjustment. A bad cat won't do anything other than increase the pollutants you're putting out.

    Fats on
  • eternalbleternalbl Registered User regular
    edited February 2010
    Fats wrote: »
    It's probably related to the cat in some way. Sensor 2 wold be the downstream sensor, which basically sits behind the cat to monitor its function. Chances are the sensor is bad or the cat isn't doing its thing anymore.

    As the function of the car goes, neither of these things is super important. A bad downstream sensor won't affect your mileage, as only the upstream sensor is used for fuel adjustment. A bad cat won't do anything other than increase the pollutants you're putting out.

    I had a cat go bad once, it ended up melting itself internally partially plugging my exhaust causing intermittent loss of power and soaring engine temperatures.

    The good news is OPs error code is saying the heater of the o2 sensor is bad, meaning the ECU isn't seeing the o2 sensor heat up like it's supposed to. On a 1998 Caravan the o2 sensor is heated rather than just using the exhaust gasses bring the sensor up to temp. It still could be something else, but just get it tested. You don't HAVE to go to a dealership.

    eternalbl on
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  • Lord YodLord Yod Registered User regular
    edited February 2010
    The sensor is bad. Get it replaced.

    Lord Yod on
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  • illigillig Registered User regular
    edited February 2010
    you can get a new O2 sensor for about $80-100 for an OEM and $40 for a non OE replacement... removing and installing one is made much easier with an oxygen sensor socket (~$6) and should take you about 5 minutes.

    you can get an ebay special catalytic converter for $20 and get it welded up for $20 at a neighborhood muffler shop.

    that said, it's not guaranteed to fix your issue... but it's a good way to save some cash if you are certain those components are busted.... after an $80 diagnosis by a shop, you can just go home and DIY the fix.

    illig on
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