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HomeAUTOMOTIVECode P0122 – Know the causes, symptoms and cost of fixing

Code P0122 – Know the causes, symptoms and cost of fixing

While various diagnostic trouble codes can lead to disaster, the P0122 code is one of the least expensive and most dangerous.

Code P0122: Know The Causes, Symptoms And Cost Of Fixing - 1 - September 14, 2022

Take a deep breath and relax if you use your reliable OBD2 scanner to know the code P0122 is the cause of the check engine light. It’s not a big deal, and it’s easy to solve. But,what exactly is error code P0122 and how can you fix it?

Read on to learn everything you need to know.

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What is the meaning of the P0122 code?

The engine computer uses the data from the sensor/switch of pedal position and the sensor/switch throttle position to improve engine performance and fuel efficiency. Is generated a P0122 code when the computer receives abnormally low input from sensors or switches. The system then switches to preset air-to-fuel ratios and spark plug timing outputs.

What are the symptoms of code P0122?

If you have a P0122 code, you may not notice anything other than a check engine light. However, when the problem gets worse, you may notice various errors. The longer you wait to fix the code, the worse the situation will be. While there are usually no symptoms, you most likely have higher emissions, and a P0122 code can cause you to fail an emissions test.

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Also, some cars may have difficulty starting while others may have decreased response when trying to accelerate.

The longer the code stays, the more likely it is that these problems will arise:

  • The engine may be difficult to start
  • Decreased responsiveness during acceleration
  • Often no noticeable symptoms

What causes the P0122 code?

When you have the P0122 code, you can generally narrow the problem down to one of three possibilities. First, a bad throttle position sensor/switch or a bad pedal position sensor/switch could be the problem. The code indicates a problem with the sensor or switch reading, which is usually the case.

Second, trash or damaged floor mats can clog and clog the pedal position sensor, causing the code P0122. Finally, it doesn’t matter if all the sensors and switches work if the wiring that transmits and powers them is rusty or damaged. Electrical problems can cause engine abnormalities if a wire is cut or crosses another circuit. These are the most frequent problems that originate from the P0122 code.

If you are not an electrical wizard, it may be advisable to take it to a workshop that deals with these problems:

  • Faulty throttle position sensor or switch
  • Faulty pedal position sensor or switch
  • Debris interfering with the pedal position sensor
  • Faulty or corroded wiring or sensor

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How serious is the P0122 code?

One of the least serious codes I couldto have your engine is the P0122. While you don’t want to put off repairs permanently, it’s completely fine to wait a few weeks until you can get it to the shop or while you wait for a part to arrive.

The biggest problems you may notice are:

  • An increase in pollutants.
  • A small increase in fuel consumption.
  • A slightly reduced throttle response.

However, a check engine light is usually the only sign unless the condition worsens.

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Cost to fix code P0122

P0122 can be caused by a faulty TPS, damaged wiring, or improper installation of the TPS. It is impossible to give an accurate estimate without first examining the situation. If you bring your car in for a diagnosis, most shops will start with an hour of diagnostic time (the time spent diagnosing your specific problem).

Depending on the labor rate of the storesthis can cost between $75 and $150. If you have the shop handle the repairs, the diagnostic fee will apply to any necessary repairs. After that, a company will be able to give you an accurate repair quote for your P0122 code.

How to fix code P0122?

To repair a P0122 code, you usually need to order a new throttle or pedal position sensor. However, both components are inexpensive and easy to change, making this code easy to repair.

However, before ordering a new sensor, double check a few things. First, make sure the pedal position sensor is clear of any impediment. Small particles or tears often interfere with the pedal position sensor on the floor mats.

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After that, double check that the sensor is receiving and delivering power signals correctly. While this can be a difficult procedure, it is quite simple if you have a multimeter. Then remove the sensor and check the input power; you’ll need to start the engine to do this, but both sensors are in places where you should be able to do this safely.

Check the wire for corrosion and resistance if everything is getting power. If everything is in order, the problem is the sensor. Otherwise, you’ll have to do more troubleshooting to find out what’s wrong. A loss of power is often caused by a blown fuse, a 10-cent remedy for the check engine light. However, if you have a wiring problem, it can be difficult to pinpoint the specific location of the problem.

However, the wiring harness is usually expensive to avoid problems. Fortunately, wiring problems are rare. These problems usually occur after you haven’t driven your vehicle in a while and rodents or other small animals have made a home in the engine compartment.

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