AutoCodes – MINI – P0122 MINI

P0122 MINI Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Quick Answer

The accelerator pedal position is monitored separately by 2 individual sensors. Common causes include Faulty Electromotive Throttle Actuator, Electromotive Throttle Actuator harness is open or shorted, Electromotive Throttle Actuator circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0122 MINI indicates Throttle Position Sensor/Switch 'A' Circuit Low Input.
Common causes: Common causes include Faulty Electromotive Throttle Actuator, Electromotive Throttle Actuator harness is open or shorted, Electromotive Throttle Actuator circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 5,531

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 15, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0122 MINI Description

The accelerator pedal position is monitored separately by 2 individual sensors. Two sensors are employed to provide redundancy, implement the monitoring function, and facilitate recognition of malfunctions. The sensors register accelerator-pedal travel as angular deflection, with data being transmitted directly to the engine-management control unit as analog linear voltage curves for the pedal angle. Overall pedal travel is mechanically expressed as 16° ±0.5°. Each change in the accelerator-pedal position is transmitted to the engine-management control unit with a maximum lag of 50 milliseconds. Sensor signals are transmitted in analog form. The engine-management control unit monitors the two input signals from the sensors and compares them for plausibility (factors such as mutual synchronicity, linearity, etc.). The Diagnostic Trouble Code (DTC) is detected when the voltage of the throttle valve sensor (1) is less than the lower limit. Lower limit: 0.21 V.

OBDII Code P0122 MINI - Throttle Position Sensor/Switch 'A' Circuit Low Input - AutoCodes.com — P0122 MINI Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0122 MINI?

Faulty Electromotive Throttle Actuator
Electromotive Throttle Actuator harness is open or shorted
Electromotive Throttle Actuator circuit poor electrical connection

How to Fix the DTC P0122 MINI?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

BMW Diagnostic Trouble Code (DTC): 101002

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0122 MINI code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0122 MINI Code

1. What are the common symptoms of OBDII code P0122 in a MINI related to the Throttle Position Sensor/Switch 'A' Circuit Low Input?

- Common symptoms include poor acceleration, rough idling, stalling, and difficulty maintaining a steady speed.

2. What are the potential causes of the Throttle Position Sensor/Switch 'A' Circuit Low Input code (P0122) in a MINI?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the TPS circuit, or a problem with the engine control module.

3. How can I diagnose the Throttle Position Sensor/Switch 'A' Circuit Low Input issue in my MINI?

- You can use an OBDII scanner to read the error code and check the throttle position sensor's voltage readings using a multimeter to diagnose the problem.

4. Can I continue driving my MINI with OBDII code P0122 related to the Throttle Position Sensor/Switch 'A' Circuit Low Input?

- It is not recommended to drive with this code as it can lead to poor engine performance and potential safety hazards. It's best to address the issue promptly.

5. What are the repair options for fixing OBDII code P0122 in a MINI?

- Repair options include replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module if necessary.

6. Are there any simple DIY tips for addressing the Throttle Position Sensor/Switch 'A' Circuit Low Input code in my MINI?

- DIY tips include checking for loose or damaged wiring, cleaning the throttle body, and ensuring proper connection of the throttle position sensor.

7. How important is the Throttle Position Sensor/Switch 'A' Circuit for the overall performance of a MINI?

- The throttle position sensor is crucial for the engine's performance as it helps regulate fuel injection, ignition timing, and transmission shifting based on the driver's throttle input.

8. Can extreme weather conditions or driving habits contribute to triggering OBDII code P0122 in a MINI?

- Yes, extreme weather conditions, such as extreme cold or heat, as well as aggressive driving habits, can potentially affect the throttle position sensor and trigger the code.

9. Will resetting the OBDII code P0122 on my MINI make the issue go away permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue causing the code is not addressed, it is likely to reappear.

10. How can regular maintenance help prevent OBDII code P0122 related to the Throttle Position Sensor/Switch 'A' Circuit Low Input in a MINI?

- Regular maintenance, including checking and cleaning the throttle body, inspecting wiring connections, and replacing worn-out sensors, can help prevent issues leading to code P0122.