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Engine-Codes – MINI – P1122 MINI

P1122 MINI Code - Pedal Position 1 Low Input

Quick Answer

The P1122 MINI diagnostic trouble code (DTC) indicates that there is a low input signal from pedal position 1 in the vehicle's electronic control module (ECM) or engine control module (ECU). Common causes include Faulty accelerator pedal position sensor, Damaged or corroded wiring/connectors related to the sensor, Malfunctioning ECM/ECU. 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
P1122 MINI indicates Pedal Position 1 Low Input.
Common causes
Common causes include Faulty accelerator pedal position sensor, Damaged or corroded wiring/connectors related to the sensor, Malfunctioning ECM/ECU.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1122 MINI Description

The P1122 MINI diagnostic trouble code (DTC) indicates that there is a low input signal from pedal position 1 in the vehicle's electronic control module (ECM) or engine control module (ECU). In simpler terms, it means that the ECM/ECU is not receiving the expected signal from the accelerator pedal position sensor. This sensor is responsible for informing the ECM/ECU about how much the driver is pressing down on the accelerator pedal, helping to regulate fuel delivery and engine performance.

OBDII Code P1122 MINI - Pedal Position 1 Low Input
P1122 MINI Code - Pedal Position 1 Low Input

Common Causes of P1122 MINI

  1. Faulty accelerator pedal position sensor.
  2. Damaged or corroded wiring/connectors related to the sensor.
  3. Malfunctioning ECM/ECU.
  4. Electronic interference or signal disruption.
  5. Poor electrical ground connections.

Symptoms of P1122 MINI

  1. Poor acceleration or lack of response when pressing the accelerator pedal.
  2. Engine stalling or rough idling.
  3. Reduced fuel efficiency.
  4. Difficulty starting the vehicle.
  5. Illumination of the check engine light on the dashboard.

How to Fix P1122 MINI

  1. Begin by diagnosing the specific cause of the low input signal from pedal position 1 using a scan tool to retrieve freeze frame data and live data.
  2. Inspect the accelerator pedal position sensor, wiring, and connectors for any visible damage or corrosion. Replace or repair as necessary.
  3. Test the sensor's output signal using a multimeter to ensure it is within the manufacturer's specified range.
  4. Check the ECM/ECU for any signs of malfunction and reprogram or replace if needed.
  5. Clear the DTC and reset the ECM/ECU to monitor the system for any reoccurrence of the code.

Cost to Fix P1122 MINI

The cost of repairing a P1122 MINI code can vary depending on the specific cause of the issue and the labor rates in your area. On average, repairing this issue may range from $100 to $500, including parts and labor. However, costs could be higher if the accelerator pedal position sensor or ECM/ECU needs replacement. It is advisable to consult with a qualified mechanic or repair shop to get an accurate estimate based on your vehicle's make and model. Remember that additional diagnostic time may also be necessary to pinpoint the exact cause of the problem.

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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 P1122 MINI Code

1. What are common symptoms of OBDII code P1122 in a MINI related to Pedal Position 1 Low Input?

- Common symptoms include reduced engine power, hesitant acceleration, and potential difficulty maintaining speed.

2. What are the possible causes of OBDII code P1122 in a MINI indicating Pedal Position 1 Low Input?

- Possible causes may include a faulty accelerator pedal position sensor, damaged wiring or connectors, or issues with the electronic control module.

3. How can I diagnose the cause of OBDII code P1122 in my MINI?

- Diagnosis typically involves using a scan tool to check for the code, inspecting the accelerator pedal sensor and related components, and testing the wiring for any faults or breaks.

4. Is it safe to continue driving my MINI with OBDII code P1122 indicating Pedal Position 1 Low Input?

- It is not recommended to drive your MINI with this code present, as it can lead to further damage and potential safety hazards due to the compromised pedal position input.

5. Can I reset the OBDII code P1122 in my MINI without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear until the root cause, such as a faulty sensor or wiring problem, is addressed.

6. Are there any DIY repair tips for fixing OBDII code P1122 related to Pedal Position 1 Low Input in a MINI?

- DIY repair tips may include checking and cleaning the accelerator pedal sensor, inspecting wiring for damage, and ensuring all connections are secure before considering sensor replacement.

7. How much does it typically cost to repair OBDII code P1122 in a MINI for Pedal Position 1 Low Input?

- Repair costs can vary depending on the specific cause of the code, but expenses may include parts such as a new accelerator pedal sensor and labor for installation.

8. Can a mechanic easily fix OBDII code P1122 in a MINI related to Pedal Position 1 Low Input?

- A qualified mechanic should be able to diagnose and repair the issue efficiently, especially if they have experience working on MINI vehicles or similar electronic control systems.

9. Will fixing OBDII code P1122 improve my MINI's performance and drivability?

- Yes, addressing the underlying cause of the code should restore proper pedal position input, leading to improved engine performance, smoother acceleration, and overall better drivability.

10. How can I prevent OBDII code P1122 from reoccurring in my MINI after repair?

- To prevent code P1122 from reoccurring, it is essential to address the root cause of the issue thoroughly, perform regular maintenance checks on the accelerator pedal sensor, and keep an eye on any related warning signs.

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