Question about 2004 Isuzu Rodeo

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P1239 Check Engine light and Reduced Power light have come on. I took it to Advanced Auto and they gave me the code P1239. They could not tell what it meant. Can you tell me what it means and is it safe for me to drive it for 6 hrs. I am out of town and need to get home. Is it safe to drive and what does this code mean. I have a 2004 Isuzu rodeo, with 38,800 miles on it.

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  • Robsters79 Jan 05, 2009

    Hi VMitchell... I just experienced that error code today for the first time. I was sitting at a light, looking around and looked down and noticed the REDUCED POWER light was on... along with the check engine. As soon I started moving, the REDUCED POWER light went off.

    Made it to AutoZone have the same code. I noticed just a few miles before the lights came on... The idle felt a little "off" when making a turn with the signal on. Every blink, the engine would sound a little more loaded. In a very slight way.

    I have a 2004 Isuzu Rodeo with the 3.5 Direct Injection engine.

    Curious.. what engine do you have?




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I have gone on the internet and looked up the code
however there was 3 2 different meanings to this one code
you need to check all oil levels as it is a warning for oil pressure as well as the throttle body
check the transmission motor oil power steering etc
if these are all fine then there is some trouble with the throttle body this is what i would pin it to.
it should be OK to drive home just be very careful keep it slow and try to stick to one speed
if it is the throttle body you will need a new one any way
if you have cruse control use it as it will keep the motor steady
avoid any harsh breaking or execrating as this makes tension KEEP IT STEADY DRIVE SLOW ABD YOU SHOULD BE ABLE TO GET HOME DON'T GO OVER 80KPH SO ABOUT 71MHP.
don't overtake don't apply power and dont use the aircon if you can help it as this all adds presure to the throttle body
if the throttle body breaks it will not damage your motor as i said you need to get it fixed any way so you cna take the chance
the worst that will happen is you will not make it home and your car wont run till a new throttle body is put on
we have a 2005 holden rodeo at work same as isuzu and we have had this problem it was the throttle body it is ine thing that is commen with in these cars
hope this helps
good luck getting home safley

Posted on Dec 28, 2008

  • ricky horwood
    ricky horwood Dec 29, 2008

    hey just wanted to change something with what i said
    please dont go over about 55mph
    this is about 80kph in australia
    71 mph in australia is about 130kph
    sorry for the mess up
    let me know how you go



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