Engine-Codes - Generic - P1122

P1122 - Throttle Position Sensor Circuit Intermittent Low Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1122 Possible Causes

  • Faulty Electric Throttle Control Actuator
  • Electric Throttle Control Actuator harness is open or shorted
  • Electric Throttle Control Actuator circuit poor electrical connection

How is the P1122 code repair?

Start by checking 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's pins.

What is the cost to diagnose the P1122 code

Labor: 1.0

The cost to diagnose the P1122 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P1122 Meaning

Electric Throttle Control Actuator consists of throttle control motor, Throttle Position Sensor (TPS), etc. The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve.
The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throttle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

More Information

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Information for specific makes

  • P1122 ACURA Throttle Position Sensor Signal Higher Than Expected
  • P1122 BMW Pedal Position 1 Low Input
  • P1122 BUICK Throttle Position Sensor Circuit Intermittent Low Voltage
  • P1122 CADILLAC Throttle Position Sensor Circuit Intermittent Low Voltage
  • P1122 CHEVROLET Throttle Position Sensor Circuit Intermittent Low Voltage
  • P1122 DODGE IAT Sens Circ Interm High Voltage
  • P1122 FORD Throttle Position Sensor Circuit Intermittent Low Voltage
  • P1122 GMC Throttle Position Sensor Circuit Intermittent Low Voltage
  • P1122 HONDA Throttle Position Sensor Signal Higher Than Expected
  • P1122 HYUNDAI Boost Pressure Control Valve
  • P1122 INFINITI Electric Throttle Control Performance Problem  
  • P1122 ISUZU Throttle Position Sensor Circuit Higher Than Expected
  • P1122 LAND-ROVER Accelerator Pedal Position Sensor Short Circuit To Ground
  • P1122 LEXUS Coolant Flow Control Valve Position Sensor Circuit Low
  • P1122 MAZDA Throttle Position Sensor Stuck Closed Lower Than Expected
  • P1122 MINI Pedal Position 1 Low Input
  • P1122 NISSAN Electric Throttle Control Performance Problem  
  • P1122 PONTIAC Throttle Position Sensor Circuit Intermittent Low Voltage
  • P1122 SATURN Throttle Position Sensor Circuit Intermittent Low Voltage
  • P1122 SUBARU Pressure Sources Switching Valve Circuit High Input
  • P1122 VOLKSWAGEN Coolant Flow Control Valve Position Sensor Circuit Low

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