P2122 OBD Error Code: Problem & Solutions

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Baffled? Don’t know what to do? No worries, Parts Avatar to the rescue! Here’s all that you need to know about the error code P2122. When the P2122 trouble code is stored, it indicates at a low voltage that has been identified by the TPS. This detection often leads to a forced engine shutdown, forced idle, or forced reduction in power output to avoid overloading circuits depending on the make/model of the vehicle. The list of potential causes triggering a error code P2122 include defective - the throttle position sensor, the throttle actuator control motor, the throttle position actuator, or the pedal position sensor. Damaged wirings, connectors or grounds should be suspected if all the four components can be seen functioning in proper order.

Well,the throttle valve opening is regulated by the electronic throttle control system (ETCS). It can be observed that whenever the driver pushes the accelerator pedal, the accelerator pedal position sensor (APP) installed transfers a signal to the engine's control module (PCM) telling the PCM how much power the driver is requesting from the engine. Then accordingly, the PCM orders the throttle plate to open. When the PCM registers the APP Sensor not changing as per the requirements when the accelerator pedal is depressed or released, it sets the code P2122. Also, the PCM might put the engine into "limp home mode" thereby limiting the power provided from the engine to avoid unnecessary acceleration.

What causes this problem with the Throttle Position Sensor D Circuit Low Input?

• A damaged throttle position sensor
• A defective throttle actuator control motor
• A malfunctioning throttle position actuator
• Jammed or unsound pedal position sensor
• Faulty wiring, connectors or ground

1. Throttle position actuator connector - Facing the error code P2122? An inferior quality throttle position actuator connector can always be hazardous for the system also it is one of the primal causes behind the occurring of the error code P2122. It triggers problems like an inability to shift up and a decreased fuel economy. Tune into Parts Avatar for supreme quality throttle position actuator connector at economical prices.
2. Switch circuit - A malfunctioning switch circuit can always be troublesome. Problems ike a draining battery and loss of voltage are likely to follow a faulty switch circuit. Tune into Parts Avatar now for you new switch circuit if you are planning to overcome the error code P2122.
3. Intake manifold tuning valve - Damaged intake manifold tuning valve can end up being the chief host inviting the error code P2122. In addition to the error code, it also invites problems a poor engine performance, weak acceleration and engine stalls. So replacing one can be one of the wisest decisions to avoid a problematic system.
4. Powertrain control module - Numerous unexplained symptoms are likely to be experienced as soon as the PCM gets damaged. The powertrain control module enables the system and transmission to work in tandem. So a faulty PCM can affect not only a few parts but the functioning of the entire system. Tune into Parts Avatar for top notch sets of PCM.
5. Accelerator pedal position sensor - The accelerator pedal position sensor essentially informs the engine how fast or slow to drive when you press the gas pedal. If faulty, it can definitely lead an increased risk of accidents. Combat the error code P2122 by getting a new APP sensor. Tune into Parts Avatar to get yours now!
6. Engine control module - No start condition, an engine stalling and engine performance issues are likely to follow a bad engine control module. Log into Parts Avatar now to get your error code P2122 fixed.

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD code P2122 here:

Common Symptoms

• First and foremost, the driver may notice an illuminated check engine light
• Black smoke coming out when the engine is started
• Heavy acceleration
• At times, misfiring
• Difficulty to start or a no-start condition
• Engine stalling

Want to correct the trouble code P2122? Read these points mentioned below:

• Now that you have seen and identified the error code P2122, we advise you to perform certain steps using a specialized scan tool
• Replace or repair a faulty ground wire
• Change or mend damaged wiring and/or connectors in the CAN bus harness or throttle actuator motor
• Replacements or repairs should be performed of the throttle position sensor, the throttle actuator control motor, the throttle position actuator, or the pedal position sensor as per the requirements

Parts Avatar Canada is here to solve all your issues related to car parts. We have stocked a wide range of best priced position sensor, switch circuit, tuning valve, PCM, ECM, pedal position, fuel injector, fuel injector harness, body control module, injection pump and a lot more to help you out in fixing your car.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2122 code to be stored:

In order to diagnose, firstly it is essential to confirm its presence. With a help of a certified mechanic, a scan tool should be used to collect the data regarding the vehicle’ performance and its abnormalities in the form of OBD-II trouble codes. Now that the mechanic has scanned and the code P2122 has been recorded, you should proceed further to tests and inspections that are essential to limit the potential causes.

Next, a thorough visual inspection should be performed of all the connectors and wiring. All the defective connectors or wirings should be replaced right away. Then the code should be cleared from the computer’ memory using the scan tool. If the code P2122 fails to reappear, the issue is likely to be solved. While on the contrary, if the code comes back, additional diagnostic steps should be performed.

The mechanic should verify the voltage readings through the throttle position sensor, the throttle actuator control motor, the throttle position actuator, and the pedal position sensor using a digital volt/ohm meter. This will help determine if any of these components listed above are responsible for the low voltage reading. Replacements should be performed if needed. The voltage should be checked through wiring, grounds, and the CAN bus network. Repair or replace all the worned out parts immediately.

Now that all the repairs have been performed, it is advised to clear the OBD-II fault codes. Scan for the abnormalities again. And lastly the vehicle should be test driven in order to ensure that the codes have been treated precisely.

Common Mistakes When Diagnosing the P2122 Code

Here we have listed a few common mistakes that should be avoided in order clear the code P2122:

• The codes should be treated in the order of their occurrence (when multiple codes are registered)
• A failure to confirm the existence of the error code P2122
• After the repairs have been performed, a failed attempt to clear the error code from the on-board computer