P2109 - OBD Trouble Code
OBD Code P2109 - Throttle/Pedal Position Sensor A Minimum Stop Performance
Is
your vehicle’s Check Engine Light illuminated? Are you experiencing sudden
decrease in engine power and acceleration? Is there a drop in the fuel economy
with increased level of emissions? All these indicate problem with the throttle
position sensor and the Powertrain Control Module, thus flashing OBD Code P2109
error.
OBD
code P2109 means Throttle/Pedal Position Sensor “A” Minimum Stop Performance
Issue.
Learn More About OBD Error Code P2109
The throttle position sensor (TPS) is part of your vehicle's fuel management system and helps ensure that the correct mixture of air and fuel is delivered to your engine. The TPS provides the most direct signal to the fuel injection system of what power demands are being made by the engine. The TPS signal is continually measured and combined many times per second with other data such as air temperature, engine RPM, air mass flow, and how quickly the throttle position changes. The collected data determines precisely how much fuel to inject into the engine at any given moment. If the throttle position sensor and its other sensor partners do their jobs correctly, your car accelerates, cruises, or coasts smoothly and efficiently, as you expect, while maintaining optimum fuel economy.
The throttle position sensor can fail in several ways, all of which result in poor fuel economy at best, and performance limitations that may create a safety hazard for you and other motorists at worst. It can also cause problems when changing gears, or setting base ignition timing. This sensor can fail gradually, or all at once. In most cases, the Check Engine Light is illuminated if a TPS failure is detected. Also, most manufacturers provide a “limp home” mode of operation with reduced power if a failure is detected. This is intended to at least allow a driver to get off a busy highway in a safer manner.
What causes this problem with the Throttle/Pedal Position Sensor A Minimum Stop Performance?
- Damage in the throttle position sensor
- Poor accelerator pedal position sensor
- Leakage in the engine vacuum
- Poor electrical connections and damaged wiring harness
- PCM failure
Replace/Repair These Parts To Fix Code P2109
- Engine Control
Module - If everything is alright with
throttle position snesor, then there is
surely some defect in Engine Control Module. Get it replaced before the
situation gets worse.
- Powertrain Control
Module – P2109 code can display due to
some issues in the Powertrain Control Module. This can lead to abnormal
functions of the vehicle as well as expensive damages. So it is very important
to replace the Powertrain Control Module with us at equitable prices.
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- Throttle Position
Sensor – If the TPS isn’t providing
the right input, the onboard computer cannot direct the engine to work
properly. When the car accelerates while driving, it usually means the
butterfly valve inside the throttle has closed up and pops open suddenly when
the driver presses on the accelerator. This gives the car an unintended burst
of speed that occurs because the sensor cannot detect the closed position of
the throttle. Replace faulty TPS now!
- Throttle Actuator
Connector – Like most mechanical parts
built on vehicles these days, the throttle actuator is designed to last the
entire lifespan of a vehicle. However, it is susceptible to wear and tear and
can become damaged, faulty or broken. If this occurs, it will cause a few
symptoms to be recognized by the driver, alerting them that a potential issue
with the throttle actuator exists and that it may need to be replaced.
- Throttle Control
Relay – In most cases, issues with the
throttle controller are electric, either caused by a damaged sensor or
electrical relay. However, there are times when the throttle controller is
damaged and needs to be replaced. Anytime you experience the above symptoms or
warning signs, take time to contact a local ASE certified mechanic who can
inspect your issue and replace the throttle controller relay, if that is the
correct solution to your problem.
- Accelerator Pedal
Sensor – The APP sensor essentially
tells your engine how fast or slow to drive as you press the gas pedal. When
you press down or lift off the throttle, it sends an electrical signal to the
vehicle’s ECU or ECM as it's also referred to, and then transmits that signal
to the fuel system. The primary reason why this part would fail is due to
exposure to high heat as it's typically located on the floorboard and next to
the firewall of the vehicle. Unfortunately, this part can't be repaired, so
when a certified mechanic diagnoses that there is a problem with this device,
you'll have to replace the accelerator pedal position sensor.
Symptoms Of The OBD Error Code P2109
Have you ever wondered why it is so important to know the symptoms of the problem? Well, it is extremely essential to know the symptoms of the problem in order to detect it. Keeping this in mind, let’s throw some light on few common symptoms of OBD error code P2109.
Common Symptoms
- Low engine power and limited output
- Abnormal throttle response and hard cold starting
- Declined fuel economy
- Sluggish Engine and lot of noise
- Faulty ECM/PCM
- Engine misfires and loss of throttle response
- Engine smoking on start-up with increased emissions
How To Correct P2109 Throttle/Pedal Position Sensor A Minimum Stop Performance
To correct this issue you might need to undergo few replacements for the defective parts such as:
- Faulty PCM replacement and reprogramming
- Faulty wiring and harness repair and replacement
- Complete throttle body assembly replacement
- Bad throttle position sensor replacement
If you need any parts to fix this problem you can easily find them with us. Not only that we also have in stock the best in range auto parts and that too at the most budget friendly prices ever online. Whether you need a PCM, Throttle Position Sensor, Throttle Position Switch, Accelerator Pedal Assembly, Control Module, electronic throttle body, Throttle actuator control motor, ECM, Throttle plate, Engine Light, Throttle actuator, you can simply rely on us for quality auto parts.
- Chevrolet
- Ford
- Pontiac
- GMC
Easy Diagnosis Of Engine Error OBD Code P2109
Here are some steps which you should follow in order to diagnose this P2109 fault code:
- The mechanic or the technician will use a diagnostic scanner or code reader like DVOM to visually scan for the error codes in the vehicle.
- After performing a careful inspection, every of the stored codes and freeze frame data are retrieved as it can help down the way for further diagnosis process.
- Most often he has to inspect the TPS itself to see if they are faulty or damaged. Additional error codes that are stored in the vehicle are also addressed.
- The mechanic performs a continuity test between the PCM and solenoid to check the resistance.
- If the components or the control modules are not faulty, he will then retune the code and test drive the vehicle.
- Now when the car is taken out for a test drive, if the P2109 code does not return soon, he will know that there is an existence of erratic condition.
- Also check for the PCM faults that may be causing wrong error codes to flash and might require reprogramming.
Common Mistakes When Diagnosing the P2109 Code
Most of the time we tend to diagnose the problem without completely identifying the real cause of it. It is important to follow all the diagnostic steps and examine each component carefully before correcting. Some of the components to be focused on are listed below;
- Dirty throttle plate
- Throttle position sensor failure
- Powertrain Control Module (PCM) failure
- Wiring/harness issue