Throttle

What does OBDII fault code P0120 really mean?

What does OBDII fault code P0120 really mean?
  • 1968
  • Mark Baldwin

What the P0120 code means. P0120 is the generic OBD-II code which indicates that the Engine Control Module (ECM) has seen the TPS sensor circuit A output voltage going below or above the sensor's expected range, or is chattering when compared to TPS sensor circuit B.

  1. How do you know if your throttle position sensor is bad?
  2. What causes a P0122 code?
  3. How do you fix a throttle pedal position sensor?
  4. Where is the TP sensor located?
  5. How do I reset my electronic throttle control manually?
  6. How much does it cost to replace a throttle position sensor?
  7. Can you clean a TPS sensor?
  8. What happens when you unplug throttle position sensor?
  9. How do you fix code po122?
  10. How do you reset throttle position sensor?
  11. What does TPS low mean?

How do you know if your throttle position sensor is bad?

Symptoms of a Bad or Failing Throttle Position Sensor

  1. Car won't accelerate, lacks power when accelerating, or accelerates itself. ...
  2. Engine won't idle smoothly, idles too slowly, or stalls. ...
  3. Car accelerates, but won't exceed a relatively low speed, or shift up. ...
  4. Check Engine Light comes on, accompanied by any of the above behaviors.

What causes a P0122 code?

Code P0122 is triggered when your vehicle's Engine Control Module (ECM) detects that your Throttle Position Sensor (TPS) circuit A is reporting an output voltage that is below its expected voltage. ... 20 volts, and if the ECM detects that it has dipped below that, then it will trigger Code P0122.

How do you fix a throttle pedal position sensor?

How to Replace a Throttle Position Sensor

  1. Materials Needed.
  2. Step 1: Locate the sensor. ...
  3. Step 2: Disconnect the negative battery cable. ...
  4. Step 3: Remove the sensor electrical connector. ...
  5. Step 4: Remove the sensor mounting screws. ...
  6. Step 5: Remove the sensor. ...
  7. Step 1: Install the new sensor. ...
  8. Step 2: Install the sensor mounting screws.

Where is the TP sensor located?

A throttle position sensor (TPS) is a sensor used to monitor the air intake of an engine. The sensor is usually located on the butterfly spindle/shaft, so that it can directly monitor the position of the throttle.

How do I reset my electronic throttle control manually?

Make sure that the accelerator pedal is fully released. Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds. Turn ignition switch “ON” and wait at least 2 seconds.

How much does it cost to replace a throttle position sensor?

The average cost for throttle position sensor replacement is between $164 and $179. Labor costs are estimated between $54 and $68 while parts are priced at $110. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

Can you clean a TPS sensor?

Clean the throttle position sensor with the throttle body cleaner and your towel. Don't use too much cleaner, just enough to get the throttle position sensor clean. Be sure to also remove any dirt or grime on or around the throttle position sensor.

What happens when you unplug throttle position sensor?

If the TPS is not adjusted correctly as evidenced by a 500rpm idle, and hesitation with initial acceleration, unplugging the TPS connector should then cause a correct idle, and a normal acceleration.

How do you fix code po122?

What repairs can fix the P0122 code?

  1. Repairing or replacing the TPS connector.
  2. Repairing the wiring as necessary.
  3. Replacing the TPS with a new sensor.

How do you reset throttle position sensor?

The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.

What does TPS low mean?

A P0122 code means that the the vehicle's computer has detected that the TPS (throttle position sensor) "A" is reporting too low a voltage. On some vehicles that lower limit is 0.17 - 0.20 volts (V). In simple terms, the throttle position sensor is used to determine what position the throttle is at.

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