Question about 2003 Chevrolet Silverado 1500

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

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

Posted on Sep 27, 2010

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Posted on Jan 02, 2017

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I have a 2004 grand prix,sputters at 2000 rpm no engine light.w/ car off key on, press gas 5 times get codes 1125,2125. clear codes light goes out but still sputters. do i change accelerator and TPS?


.The control module provides the APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensor then provides the control module a signal voltage proportional to pedal movement. The APP sensor 2 signal voltage is low at rest and increases as the pedal is depressed. When the control module detects that the APP sensor 2 signal or the APP sensor 5-volt reference voltage is outside the predetermined range, DTC P2125 sets.

The control module provides the APP sensors a 5-volt reference circuit and a low reference circuit. The APP sensors then provide the control module signal voltages proportional to pedal movement. The APP sensor 1 signal voltage is low at rest and increases as the pedal is depressed. The APP sensor 2 signal voltage is also low at rest and increases as the pedal is depressed. One APP sensor DTC will not cause the Reduced Engine Power message to be displayed. Two APP sensor DTCs for the same sensor also will not cause the Reduced Engine Power message to be displayed. However, if two or more DTCs are set involving more than one APP sensor, DTC P1125 will set.

Jan 17, 2017 | Cars & Trucks

1 Answer

2005 chevy suburban 5.3 engine hesitation


http://engine-codes.com/p1125_chevrolet.html
According to that website above, its your Accelerator Position Pedal Sensor. If you have already replaced it check your wiring harness.
Here is a website that for your wiring diagram for your 2005 Chevy Suburban.

Nov 26, 2013 | 2005 Chevrolet Suburban 1500

2 Answers

2007 chevy tahoe loses power


No messaage of reduced engine power ? Your vehicle has electronic throttle control . Has four position sensors , two are located in the gas pedal ,an two in the throttle body . The PCM uses these sensor to know how much to open the throttle plate ,allowing more air into the engine . How did you read this code an where did you read it's definition at ? This is not a code for your vehicle . Some time cheap code readers get them wrong .
DTC P2120: Accelerator Pedal Position (APP) Sensor 1 Circuit
DTC P2122: Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage
DTC P2123: Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage
DTC P2125: Accelerator Pedal Position (APP) Sensor 2 Circuit
DTC P2127: Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage
DTC P2128: Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage
DTC P2138: Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
DTC P2101: Throttle Actuator Position Performance
DTC P2119: Throttle Closed Position Performance
DTC P2176: Minimum Throttle Position Not Learned

If one of this position sensors is bad it will throw the PCM into a
Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
- Ignore the accelerator pedal input.
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.


017 Accelerator Pedal Position Sensors
Drive by Wire Function and diagnostics by Wells

Jan 01, 2018 | 2002 Oldsmobile Silhouette

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

2 Answers

The code is p1125bb


Diagnostic Test Code (DTC) P1125 Has to do with your Accelerator Pedal Position Sensors (APP).

The APP sensor 1 and APP sensor 2 are potentiometer type sensors with the following circuits.
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The APP sensor 1 signal to the PCM is low at rest and increases as the pedal is depressed. The APP sensor2 signal also low at rest and increases as the pedal is depressed. DTC P1125 sets when BOTH of these sensors have a problem. It will not set if only one of the sensors are not reading correctly. This code also does not set alone. There will be at least 2 other APP fault codes set along with this code and these codes MUST be diagnosed first.

May 15, 2011 | 2006 Buick LaCrosse

1 Answer

My 2005 chevy z71 will go to reduced engine power when pushing on the gas i believe it is the throttle position sensor where is an affordable place to get one?


it sounds me like the app sensor is bad, i dont think tps will cause reduced engine pewer, but app sensor will . u have to replace the trottle body to fix the app sensors uder the hood.
replace the accelleator pedal to fix the app sensors n the cab.
there is a ground wire in the big wire loom behind the intake if u loose ground ull get that reduced power issue i replaced throttle body and accellerator pedle n had the same reduced power few minutes after test drive came back cleared the codes then found a hit on idenafix for ground in the big wire loom ground went to fire wall and was bearly hanging on broke when i touched it fixed it witha crimp on fitting, havent had the code set since

Mar 25, 2010 | 2005 Chevrolet Silverado

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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