P0121: Toyota Code - (Throttle Position Sensor Circuit Range/Performance Problem)

-

What are the Possible Causes of the DTC P0121 Toyota?

Faulty throttle position sensor. 

Throttle position sensor harness is open or shorted 

Throttle position sensor circuit poor electrical connection 

Faulty accelerator pedal position sensor


How to fix p0121 Toyota code?

Use a voltmeter and scan tool to test the TPS sensor, throttle and replace the broken one 

Check the connectors of your wire harness

Repair or replace any loose or corroded connections

Replace the entire harness if you see any signs of moisture

Clear the code and test drive your vehicle

When persist replace the ECU.

Code P0121 Toyota Description

Signaled when your power train control module receives an incorrect signal from your throttle position sensor, or TPS. Your TPS is connected to a reference wire with five volts and typically a ground wire.

What are Code Possible Symptoms? 

  • Engine Light ON or Service Engine Soon Warning Light
  • No acceleration when accelerator pedal depressed 

Comments

Post a Comment

Popular posts from this blog

P0171 Mazda Fuel Trim System Too Lean (bank 1)

-
Image
What are the Possible Causes of the DTC P0171 Mazda. Weak or faulty fuel pump or dirty fuel filter (main culprit) Dirty or faulty mass airflow sensor or vacuum leakages  Defective oxygen sensor or Exhaust pipe leakages Faulty fuel injectors Blocked catalytic converter How to fix code p0171 Mazda  Clean fuel filter or replace weak the fuel pump (main culprit) Make sure no vacuum leakages or exhaust pipe leakages blockages Replace Mass airflow sensor  Replace oxygen sensor  Code p0171 Mazda Description  A P0171 code is set by your vehicle’s power train control module (PCM) when it detects that the air-to-fuel ratio of your vehicle is too lean.  This means that the PCM is relaying that the engine is receiving too much air into the combustion chamber and not enough fuel. What are the Symptoms of code p0171 Mazda? Lack of power when driving  Rough idle or unstable idle  Black smoke comes out of exhaust  Misfire is detected  Hissing sound du...
Read more

C1252 Toyota Code - Brake Booster Pump Motor faulty

-
Image
 Code C1252 Description  The diagnostic trouble code (DTC) C1252 in a Toyota indicates that the brake booster pump motor is running for an abnormally long time due to leakages or worn-out parts. This code is based on a signal from the skid control ECU. DTC stands for Diagnostic Trouble Code. It's a code that alerts you to a problem with your vehicle. The DTC C1252 indicates an issue with the brake booster pump motor. Code C1252 Toyota Possible Causes Faulty Brake Actuator Assembly Brake Actuator Assembly harness is open or shorted Brake Actuator Assembly circuit poor electrical connection How to fix code 1252 Check the operation of the hydraulic brake booster pump motor.  Check for a short circuit in the harness and connector between the ABS motor and the ECU.  Check for a short circuit in the harness and connector between the hydraulic brake booster and the ABS motor relay. 
Read more

P0171Honda Fuel Trim System Too Lean (bank 1)

-
Image
What are the Possible Causes of the DTC P0171 Honda. Weak or faulty fuel pump or dirty fuel filter (main culprit) Dirty or faulty mass airflow sensor or vacuum leakages  Defective oxygen sensor or  Exhaust pipe leakages Faulty fuel injectors Blocked catalytic converter How to fix code p0171 Honda  Clean fuel filter or replace weak  the fuel pump (main culprit) Make sure no vacuum leakages or exhaust pipe leakages blockages Replace Mass airflow sensor  Replace oxygen sensor  Code p0171 honda Description  A P0171 code is set by your vehicle’s power train control module (PCM) when it detects that the air-to-fuel ratio of your vehicle is too lean.  This means that the PCM is relaying that the engine is receiving too much air into the combustion chamber and not enough fuel. What are the Symptoms of code p0171 Honda? Lack of power when driving  Rough idle or unstable idle  Black smoke comes out of exhaust  Misfire is detected  Hissin...
Read more