TOP 8 SYMPTOMS OF A BAD ACCELERATOR PEDAL POSITION SENSOR

What is Accelerator Pedal Position Sensor?
An accelerator pedal position sensor monitors the position of the accelerator pedal and provide this information to the powertrain control module. The PCM then uses this data to determine the appropriate fuel injection and throttle opening to achieve the desired engine performance.
The accelerator pedal position sensor is located inside the accelerator pedal.

Symptoms of Bad Accelerator Pedal Sensor

1) Acceleration Issues
The accelerator pedal sensor helps the driver to control the vehicle acceleration. When the sensor malfunctions, the vehicle response to pressing the accelerator pedal is significantly delayed or reduced. This can pose a serious hazard on the road as it limits the driver's control over the car.

2) Illuminated Check Engine Light
If your accelerator pedal position sensor is faulty, one of the most noticeable symptoms is the illumination of the check engine light. The accelerator sensor is an electronic component that communicates with the powertrain control module. If there is an issue, the PCM activates an error code that leads to the illumination of the check engine light.

3) Unresponsive Throttle Response
One of the primary signs of a faulty accelerator pedal sensor is an unresponsive or delayed throttle response. When you press the accelerator pedal, you may notice a delay in the engine's response or a lack of power.

4) Fuel Consumption
A common sign of a bad accelerator pedal position sensor is a decrease or increase in fuel efficiency. When the pedal position sensor fails, it sends an incorrect signal to the PCM, causing the engine to receive either too much or too little fuel. This will result in poor (or better) fuel consumption.

5) Poor Engine Performance
A malfunctioning accelerator pedal position sensor can have a negative impact on engine performance and fuel economy. This sensor helps to regulate fuel pressure and communicates important data from the PCM to the vehicle's throttle body. However, if the sensor is damaged or if the wiring is frayed, it may not be able to transmit data to the PCM accurately. This can result in a significant reduction in engine performance, affecting the overall driving experience and fuel economy of the vehicle.

6) Shifting Issues
A malfunctioning accelerator pedal position sensor can lead to shifting problems in a vehicle. When the sensor fails to function properly, it sends inaccurate information to the powertrain control module. This leads to problems when pressing the gas pedal, such as difficulty shifting or parking the vehicle.

7) Rough Idle
A faulty accelerator sensor can cause rough idling in a vehicle, whereas a properly functioning accelerator sensor ensures a consistent fuel supply and smooth idling. When the sensor fails, it can disrupt the proper fuel supply, resulting in rough idling.

8) Erratic or Inaccurate Speedometer
In some cases, a failing accelerator pedal sensor can cause the speedometer to behave erratically or display inaccurate speed readings while driving.

More Videos:

Disclaimer:
This video is just for educational purposes only. We are not in the auto repair business nor publish automotive service manuals. This video is not reviewed or authorized by any vehicle manufacturer. This video is intended only as general guidance. Every system is slightly different, so refer to the owner’s manual of your vehicle for any specific information about your model. Remember that only proper service and repair procedures will ensure your car's safe and reliable operation.

Copyright Disclaimer:
Copyright Disclaimer under section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational, or personal use tips the balance in favor of fair use.

*If the video is helpful, remember to give it a "thumbs up" and consider subscribing.*

[fjfell]

Number 1 is limp mode (reduced power). Very dangerous running on a big highway, and bloody annoying. This can be countered by turning the engine off and restarting. Simple if you have a manual shift. It can be done while in motion. ( Push clutch down, turn off engine, turn key back to run position, re-engage clutch which re-starts the engine, takes 7 seconds.) If you have an automatic, you have to stop because it has to be put into into park. The worst circumstance is an intermittent problem. Hard to diagnose because the car is fine most of the time and the problem can only be identified to specific cause when it is present.
You may get a P1271. P1275, P1280 fault code... but the problem may be in the wiring rather than the APP sensor or in the throttle position sensor. Sometimes it takes an oscilliscope to locate and most places dont have this capability.

[josealcaraz]

Is this consider a throttle pedal position sensor as well or is that a completely different part?

[jackiesavage]

Would the symptoms be the same in a manual? I feel like my car is sluggish and when accelerating at times its jerks a bit, abs and vsa lights are on but cruise control works so i assume they're not on because of the speed sensors...

[igwesunny]

My Toyota Avalon 2013 model is doing this from diagnosing report (code: P1604) startability malfunction, exactly what you explained it's consuming a lot of fuel could it be poor accelerator pedal sensor?

[lynnking]

I have a 2005 Chevy trailblazer 4.2. Replaced foot pedal sensor ladt yr. Just put 3rd throttle body on last week. Did all resets. Still going into limp mode. What else could be wrong?

[misskizzyboyd]

2006 cadillac cis 3.6L car has both manual and automatic options>> when driving more than 60mph+ (limp mode) until first shifting to Neutral /decrease speed, then recrank ** Car parked due /non use-- went to drive vehicle; attempted to operate/drive car as it previously had been -60mph . during same operation= limp mode and nolonger sensed acceleration.. All Symptoms (2 yrs barely being driven) check engine light increase fuel consumption, etc..
took forever to find this out ...Needless to say I just replaced acceler.pedal -did NOT calibrate/reset/relearn... It is now sensing the gas but not advancing as it should.. I used the pedal from another CTS 2004.. PLEASE HELP I NEED THIS VEHICLE NOW- 43yrs old broke and about to just give up on everything-- apologies for long msg..

[krushnakatrajkar]

p02200 throttle /pandel sensor b input low ...plz suggest solution ..throttle change /ya pandel change pl sugest me

[tiktok]

I have Opel Astra j faults code 84 cause went in limp mode clean engine light but car not driving great when I press gas pedal it’s moving slow

[ElAlex]

Yeah I have 2018 Q50s 3.0t and I recently replaced the the pedal sensor and the two throttle body’s and still nothing 😔

[kyleewilliams]

I have a 22 Chevy Malibu and my code is P2318 help me I don’t know if I need a new throttle sensor or a brake accelerator sensor.