AutoCodesMINI – P2123 MINI

P2123 MINI Code - Throttle/Pedal Positio Sensor/Switch 'D' Circuit High

Quick Answer

The accelerator pedal position is monitored separately by 2 individual sensors. Common causes include Faulty Accelerator Pedal, Accelerator Pedal harness is open or shorted, Accelerator Pedal 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
P2123 MINI indicates Throttle/Pedal Positio Sensor/Switch 'D' Circuit High.
Common causes
Common causes include Faulty Accelerator Pedal, Accelerator Pedal harness is open or shorted, Accelerator Pedal 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 906
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 15, 2020
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Code P2123 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 Digital Motor Electronics (DME) diagnosis the voltage at the Accelerator Pedal Module Pedal Sensor 1. The Diagnostic Trouble Code (DTC) is detected when there is a short circuit to B+.
OBDII Code P2123 MINI - Throttle/Pedal Positio Sensor/Switch 'D' Circuit High - AutoCodes.com
P2123 MINI Code - Throttle/Pedal Positio Sensor/Switch 'D' Circuit High

What are the Possible Causes of the DTC P2123 MINI?

  • Faulty Accelerator Pedal
  • Accelerator Pedal harness is open or shorted
  • Accelerator Pedal circuit poor electrical connection
  • Faulty Accelerator Pedal Module

How to Fix the DTC P2123 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2123 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 P2123 MINI Code

1. What are the common symptoms of OBDII code P2123 in a MINI vehicle?

- Common symptoms include reduced engine power, hesitation during acceleration, and the vehicle going into limp mode.

2. What causes the Throttle/Pedal Position Sensor/Switch 'D' Circuit High error code in a MINI?

- The code P2123 is typically caused by a faulty throttle position sensor, damaged wiring or connectors, or issues with the throttle body itself.

3. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code in my MINI?

- Diagnosing the code involves using an OBDII scanner to read the code, checking the throttle position sensor's voltage output, and inspecting the wiring and connectors for any damage.

4. Can I still drive my MINI with the P2123 error code?

- It is not recommended to drive the vehicle with the P2123 code as it can lead to performance issues and potential safety hazards. It's best to address the issue promptly.

5. What are some DIY repair tips for fixing the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code in a MINI?

- DIY repair tips include checking and cleaning the throttle body, inspecting the wiring for any breaks or damage, and replacing the throttle position sensor if necessary.

6. How much does it typically cost to repair the P2123 code in a MINI?

- The cost of repairing the P2123 code can vary depending on the exact cause of the issue. On average, it may cost between $200 to $500 for parts and labor.

7. Will resetting the OBDII code P2123 in my MINI make it go away permanently?

- Resetting the code may temporarily clear the check engine light, but if the underlying issue causing the P2123 code is not fixed, the code is likely to reappear.

8. Is the Throttle/Pedal Position Sensor/Switch 'D' Circuit High error a common problem in MINI vehicles?

- While not extremely common, the P2123 code can occur in MINI vehicles, particularly in models with electronic throttle control systems.

9. Are there any recalls related to the P2123 code in MINI vehicles?

- There have been no specific recalls related to the P2123 code in MINI vehicles, but it's always a good idea to check with the manufacturer for any updates.

10. Can a faulty throttle position sensor cause other issues in addition to triggering the P2123 code?

- Yes, a faulty throttle position sensor can cause issues like poor fuel economy, rough idling, and difficulty starting the vehicle in addition to triggering the P2123 error code.

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