Question about GMC Yukon Denali

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I'm having problems going into third gear it also went to reduce power mode....got it checked it was throwing trouble code p1125. Could this be related ..I have a 2003 gmc Yukon XML Denali

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I had the same problem. The truck would shutter in 3rd gear. It was the Torque converter lock up selonoid

Posted on May 18, 2014

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2004 isuzu rodeo codes P1125, P1295 and P1515 what do they mean ?


no engine stated.
answering for usa rodeo. only. on a usa forum.
it means trouble; the factory manual covers this.
As does mitchells DIY online, read that much>?
those are called DTCs , scan codes. diagnostic trouble codes.
The PCM looks for problems all the time running,
CALLED MONITORS (a sort of nanny)
all cars do this 96 to now, in USA. by law.
If no book or no mitchells try google (or the like)
if you had you'd have seen isuzu examples.

but google finds this in 1 click.

the great justanswersl.com (ASE Techs)?
1125
1295
1515
DTC P1125: ELECTRIC THROTTLE CONTROL (ETC) LIMIT PERFORMANCE MODE.
2nd hit.,
P1125 Isuzu Electronic Throttle Control Limit Performance Mode P1221 Isuzu Throttle Position Sensor 1-2 Circuit Performance P1295 Isuzu Electronic Throttle Control Power Management Mode P1515 Isuzu TP Sensor To MAF Sensor Correlation


the first hit said, bad grounds top engine to PCM
and bad harness wires to above same place.
but as all techs, no, bad wires, happen all the time.
as do vast other reasons.
what I do , as the FSM states, clearly
is pick one failure and correct it, and sometimes gets them all.
like blown fuses do, on all vehicles.

1125 means limphome, is in force Low power too.
the TPS is acting up.
the 1515 means in English
that the Throttle angle and air flow dO NOT JIBE.
my jeep books calls that "incongruity": (nicer word)
or they differ. and should not.
i'd be checking the TPS voltages. for correct voltage.
this can fail for wires, rust, and bad sensors.
the word performance means it reads funny. (wrong)


we use a real scan tool and a real volt meter to see what the readings are on these parts.
why not get a real ASE tech to find it.
they know all that electronics magic,
ALL learn that there can be false codes.
one failure can trip many codes, but only one is the fundamental code.

or vacuum leaks cause many errors but not one
states vacuum leaks.
see?

Oct 01, 2016 | 2004 Isuzu Rodeo

1 Answer

2000 izuzu rodeo reduced power light came on, it starts up but immediately dies. Read all the following codes p0502, p0401, p1125, p1295, p1515, p0137, p0106, p1299


check all fuses to start with. then check all grounding points... for that many codes usually means a bad pcm or loose ground wire..

Jul 08, 2012 | Cars & Trucks

1 Answer

Any ideas? Check Engine Light and Reduced Power Light for Isuzu Rodeo


check your fuses first the first codes are vac. leak codes related to fuel at fuel tank

Jul 06, 2012 | 2001 Isuzu Rodeo

2 Answers

OBD2 CODE P1125


Throttle Position Sensor --intermittent

Jun 22, 2011 | Pontiac Grand Prix Cars & Trucks

1 Answer

I have 3 codes p1125, p1295, and p1515 and was wondering what they are


p1125 tells you the vehicule has gone into (limp) mode or reduced power. p1295 will direct you to a problem with your Throtlle position sensor and p1515 fault indicates theres a problem with the corilation between throttle position and commande giving.

i own a 2001 rodeo LS 3.2L and had this codes show up. The machine had really bad idling and when accelerating quick after first start would go into limp mode and not pick up speed pass 50 kms. i tryed changing the throttle position sensor.. nothing. tryed changing the spark plugs and noticed they looked unusually white (engine running lean) i put injector cleaner in with i freash tank of gas thinking the injectors were dirty and it seemed to help. Next a changed the fuel filter which completly solved my problem. at the last oil change they told me they changed it but didn't the inside of the filter was rusted and clogged starving the engine of fuel.

Problem solve for 15 $ after you change your filter take it to and auto parts store with a computer to reset the engine lights

Dec 11, 2010 | 2001 Isuzu Rodeo

1 Answer

P1125 code comes up and reduced engine power occures. app sensor has been replaced, wiring appears to be ok


THESE HAVE PROBLEMS WITH THE throttle motor itself and the harness that plugs into it check the harness

Sep 27, 2010 | 2003 Chevrolet Silverado 1500

2 Answers

Reduced engine power signal throwing out codes p1125 and p2138. what do i do to fix the problem?


There is a GM service bulletin on this particular item. basically covers both codes your getting.
#07-06-04-019A: Intermittent MIL/SES, DTC P2138 with Reduced Engine Power (Repair Instrument Panel (IP) to Body Harness Connector)

Models: 2005-2008 GM Passenger Cars and Light Duty Trucks (Including Saturn)

Jul 03, 2009 | 2005 Pontiac Grand Prix

3 Answers

Stalling, 'reduced power' light, and OBD code P1125 Manufacturer control air metering...


These trucks have a drive by wire system,we seen a` lot with a broken ground wire on the rear of the drverside cyl head,this is hard to see just feel and give the wire a tug .If the wire is loose or broken the reduced engine power light will come on.

Feb 02, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

Stalling, 'reduced power' light, and OBD code P1125 Manufacturer control air metering...


My name is Juan Heredia and I'm an ASE certified technician. I have seen this code and this driveability issues before, I will need a little more information about your car to tell you exactly what your problem is, Honda has two different types of throttle bodies for this especific vehicle, drive by wire and cable operated, if your vehicle uses the drive by wire type I would highly recommend to replace the throttle body actuator, if it uses the cable operated one it will be necesary to do a little more testing, let me know if this helps

Jul 31, 2008 | 2000 Honda Passport

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