Reduced Power and Check Engine Light

I would try cleaning the throttle body these guides should help. Here is a guide to help us fix the problem:

https://www.2carpros.com/articles/throttle-actuator-service

and

https://www.2carpros.com/articles/reduced-power-limp-mode

Please run down these guides and report back.

Hello, I have a rodeo isuzu and has caught the light reduced power, loses power and not walk more than 10 miles, I get the following codes.
P1120
P1125
P1515
clean the acceleration sensor, and left with more problems than before, now is not the light goes out.
your help thanks

try cleaning throttle plate on both sides and iac hole with choke cleaner first but it may need a new throttle body and or gas peddle assy It may also be apcm problem so a pro should really look at this.

thanks

I need the engine manual isuzu rodeo 3.0 2002 ... thanks

you can rent them through us under repair or go to an auto parts

Friends I want to know if the engine isuzu rodeo 3.0 equals 3.2 engine ... serve its parts or the manual is the same ..
thx

reduced power light on

That usually means there is a problem with the throttle by wire system and its in limp fail safe mode.You need to have the computer scanned for codes and let me know the exact code numbers you have not code descriptions.

the manual if like a year or two to yours should be sufficient the 3.0 and 3.2 will have minor differences.

Friends, my mechanic tells me it can not find the data sheets for my Isuzu rodeo 3.0 v6 petrol automatic .. He says he is a rare model, where can I find information on my rodeo
body acceleration of 3.2 for 3.0 serves me

I have no idea try Isuzu they made it.

friends have a rodeo with reduced power isuzo 3.2 encendido..no what else hacer..el electric circuit is bien..y bien..que more sensors can damage the jeep ... oxygen sensors can be either the catalyst ???

friends have a rodeo isuzo 3.2 on reduced power not know what else makes the electric circuit is well and good that more sensors can damage the jeep oxygen sensors can be either the catalyst ???

https://www.2carpros.com/articles/reduced-power-limp-mode

Please run down these guides and report back.

Reduced power light is on with check engine. I was wondering if I could get the trouble shooting tree sent to me? Thanks.

you need to scan for codes to see what is causing it first auto parts can do it for free if in US

Here is a link to an article that features written instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning. Most scanners are inexpensive to purchase, you can purchase one from Amazon.com. Once you have the codes please get back to us so that we can further assist you. Thank you for visiting 2CarPros.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://youtu.be/YV3TRZwer8k

Thanks guys. I have the codes P1125, P1295, P1299, P1515, P1340, P1326, P1310. I think some are for the transmission for the reduced power and I had to drive it home. From this site and others I am reading it is either the TPS or the one on the gas peddle. I replaced the TPS about 3 years ago but that could still be the problem. Any help is welcome and thank you

Hey Bill,

Please clear the codes and take it for another short drive as soon as the light comes on run the codes. This will bring up one or two codes that will help us find the problem. With a list that long some codes are false and we don't want to start going down the wrong road to fix it.

Sorry it took so long. Cleared the codes and it finally gave me the reduced power and these are the codes P1125, P1295,@P1515. I know the P1515 is the reduced power. I looked up the other ones and I'm wondering if it is again the throttle position sensor. Again any help is appreciated. Thanks

Hey Bill,

Yep its looking that the TP sensor is going or gone bad, try to replace it and let us know what happens.

Best, Ken

Is it the one on the gas pedal or the one on the engine

If it has an electronic throttle its the one by the gas pedal, if not its the sensor by the throttle body.

Replaced the TPS by the peddle and so far it is working. My next question is what should the idle be. After its warm it is running around 775rpm. That is controlled through that sensor I just installed. You can adjust the peddle sensor. I think it should be around 6oorpm at warm idle.

Reduced power light came on and vehicle would not go more than thirty mph and laboring at that. Replaced MAF, Throttle body and accelerator pedal sensor. Maf new TB and APS were used parts. everything worked fine forabout fifteen miles then same problems manifest. Help Cecil, Help, at my wits end (short journey lol). God Bless Chas

idle speed is controlled by pcm and should be 750 rpm. 25 rpm is nothing to try to adjust for

scan for codes and check fuel pressure with a gauge auto parts rent it. also check for a vacuum leak.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Okay then thanks to all of technicians out there that assisted me. I will look at the site and see if in the future I can help out also.

Hi Chas,

If you decide you would like to conduct the scan yourself here is a link to an article that features written step by step instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning. Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

Once you have the codes please get back to us so that we can further assist you. We are always happy to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin

That would be great, we help one person at a time get back on the road :)

Thanks for replies. Limped into shop they hooked up their Hi-tech "$20,000" machine now they tell me passenger side catalytic converter is shot and needs replacing? Thoughts? I was going to put in a universal since both sensors are in pipe above and below catalytic converter. Thoughts?

HMAC300 please advise on my 2001 reduced power post thanx God Bless Chas

universal will work but not as long as original equipment or one made for your car. was it a 430 code?

Hi CHASNESS,

Please start a new question here https://www.2carpros.com/questions/new

Best, Ken

The reduce power light came on while driving in Kissimmee, Florida. Temperature here is not cold, and now the truck wont start. It has done this in the past but goes away and does not come back for a few moths. Having to pay a tow truck almost $200 to bring back home, because the truck will not start up this time. As if the battery was dead or something.
In the past when it has done this, the truck would not turn off completely, but when trying to hit the gas, no matter how much, it would not go faster than 5-10 miles. Tried to crank, but would not do anything. How can I fix the issue? Please help!

To the left of the A/T Oil Temp light it has the Reduced Speed light, it is on. The car will turn on and then turn off again. After that it won't turn back on. I have to wait at least an hour or two to try and turn on again. I am not able to take to scan, but will take all the help I can to fix myself.

When the engine could not be started, you need to find out what is missing. click the link below to find out how.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Engine Performance problem
2001 Isuzu Rodeo Question 6 cyl Four Wheel Drive

i have a 2001 isuzu rodeo , i put a cone air filter on about 2 months ago just recently my reduced power light comes on. is my filter causing my light to come on or do i have a bigger prob

Hi there,

This filter may be restricted, is it a cleanable unit, if so give it a clean or replace it with the standard air filter and see how this works, run a scan as well just to check for any fault codes, start here.

mark (mhpautos)