P2123 BMW 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 BMW 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.
Code P2123 BMW Description
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+.
What are the Possible Causes of the DTC P2123 BMW?
- 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 BMW?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2123 BMW 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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Frequently Asked Questions about P2123 BMW Code
1. What are the common symptoms of OBDII code P2123 in a BMW?
- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."
2. What are the possible causes of OBDII code P2123 in a BMW?
- The code P2123 can be triggered by a faulty throttle position sensor, issues with the pedal position sensor, wiring or connector problems, or a malfunctioning electronic control unit (ECU).
3. How can I diagnose the cause of OBDII code P2123 in my BMW?
- Diagnostic steps may include checking the throttle and pedal position sensor readings with a scan tool, inspecting the wiring and connectors for damage, and testing the ECU for proper functioning.
4. Can I drive my BMW with OBDII code P2123?
- It is not recommended to drive your BMW with code P2123, as it can lead to unsafe driving conditions and potential further damage to the vehicle.
5. How can I repair OBDII code P2123 in my BMW?
- Repair options may include replacing the faulty throttle or pedal position sensor, repairing damaged wiring or connectors, or recalibrating the electronic control unit.
6. Is it possible to reset OBDII code P2123 in a BMW without fixing the underlying issue?
- Resetting the code without addressing the underlying problem will likely result in the code reappearing once the issue persists.
7. Can a DIY enthusiast fix OBDII code P2123 in a BMW?
- Depending on the level of expertise, a DIY enthusiast may be able to address code P2123 by following diagnostic procedures and replacing components as needed.
8. How much does it typically cost to repair OBDII code P2123 in a BMW?
- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.
9. Will OBDII code P2123 cause permanent damage to my BMW if not fixed promptly?
- Ignoring code P2123 can lead to further engine or drivability issues, potentially causing permanent damage if left unresolved for an extended period.
10. How long does it take to repair OBDII code P2123 in a BMW?
- The repair time for code P2123 can vary based on the exact cause and complexity of the repair, but it may take a few hours to a full day at a repair shop.
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