Engine-Codes - Generic - P0122

P0122 Code - Throttle Position Sensor 1 Circuit Low Voltage

- Code Popularity: 79,686 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0122?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Throttle Body Assembly
  • Throttle Body Assembly harness is open or shorted
  • Throttle Body Assembly circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
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How to Fix the DTC P0122?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0122 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0122 Code Mean?

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the throttle position sensor 1 signal voltage is less than 0.32 V for greater than 1 s.
P0122 Code - Throttle Position Sensor 1 Circuit Low Voltage

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Code P0122 Information for Specific Makes

  • P0122 Acura Throttle Position Sensor 'A' Circuit Low Voltage  📷
  • P0122 Audi Throttle Pedal Position Sensor/Switch 'A' Circuit Low
  • P0122 BMW Throttle Position Sensor/Switch 'A' Circuit Low Input  📷
  • P0122 Buick Throttle Position Sensor 1 Circuit Low Voltage  📷
  • P0122 Cadillac Throttle Position Sensor 1 Circuit Low Voltage  📷
  • P0122 Chevrolet Throttle Position Sensor 1 Circuit Low Voltage    📷
  • P0122 Chrysler Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input
  • P0122 Dodge Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input  
  • P0122 Ford Throttle/Pedal Position Sensor 'A' Circuit Low Input
  • P0122 GMC Throttle Position Sensor 1 Circuit Low Voltage    📷
  • P0122 Honda Throttle Position Sensor 'A' Circuit Low Voltage    📷
  • P0122 Hyundai Throttle/Pedal Position Sensor 'A' Circuit Low Input
  • P0122 Infiniti Throttle Position Sensor/Switch '1' Circuit Low Input
  • P0122 Isuzu Throttle Position Sensor 1 Circuit Low Voltage
  • P0122 Jaguar Throttle Position Sensor/Switch 'A' Circuit Low Input
  • P0122 Jeep Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input
  • P0122 KIA Throttle/Pedal Position Sensor 'A' Circuit Low Input
  • P0122 Lexus Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input  📷
  • P0122 Mazda Throttle Position Sensor 1 Circuit Low Input
  • P0122 Mercedes-Benz Throttle/Pedal Position Sensor/Switch 'A' Circuit Low Input
  • P0122 MINI Throttle Position Sensor/Switch 'A' Circuit Low Input  📷
  • P0122 Mitsubishi Throttle Position Sensor Circuit Low Input
  • P0122 Nissan Throttle Position Sensor/Switch '1' Circuit Low Input
  • P0122 Oldsmobile Throttle Position Sensor/Switch 'A' Circuit Low Input
  • P0122 Pontiac Throttle Position Sensor 1 Circuit Low Voltage
  • P0122 Saturn Throttle Position Sensor 1 Circuit Low Voltage
  • P0122 Scion Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input  📷
  • P0122 Subaru Throttle Position Sensor/Switch 'A' Circuit Low Input
  • P0122 Toyota Throttle / Pedal Position Sensor / Switch 'A' Circuit Low Input    📷
  • P0122 Volkswagen Throttle Pedal Position Sensor/Switch 'A' Circuit Low

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