P2128 BMW Code - Throttle/Pedal Positio Sensor/Switch 'E' 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
- P2128 BMW indicates Throttle/Pedal Positio Sensor/Switch 'E' 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 P2128 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 2. The Diagnostic Trouble Code (DTC) is detected when there is a short circuit to B+.
What are the Possible Causes of the DTC P2128 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 P2128 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 P2128 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 P2128 BMW Code
1. What are the common symptoms of OBDII code P2128 in a BMW?
- Common symptoms include reduced engine power, hesitation or stalling while driving, and illuminated Check Engine Light.
2. What are the possible causes of OBDII code P2128 in a BMW?
- The code P2128 typically indicates a fault with the throttle/pedal position sensor/switch 'E' circuit being too high. Possible causes include a faulty sensor, wiring issues, or a problem with the electronic throttle control system.
3. How can I diagnose the OBDII code P2128 in my BMW?
- Diagnosis usually involves using an OBDII scanner to retrieve the code and then inspecting the throttle/pedal position sensor, checking for any damaged wires or connectors, and testing the sensor's voltage output.
4. Can I continue driving my BMW with OBDII code P2128 present?
- It is not recommended to drive your BMW with the code P2128 present as it can lead to performance issues and potential safety hazards. It's best to address the issue promptly.
5. How can I repair OBDII code P2128 in my BMW?
- Repair options may include replacing the faulty throttle/pedal position sensor, repairing any damaged wiring or connectors, or resetting the electronic throttle control system.
6. Are there any DIY tips for fixing OBDII code P2128 in a BMW?
- While some basic troubleshooting steps can be performed by DIY enthusiasts, it's recommended to seek professional help for diagnosing and repairing OBDII code P2128 to ensure proper and accurate resolution.
7. Is it safe to reset the OBDII code P2128 in my BMW using an OBDII scanner?
- Resetting the code using an OBDII scanner may temporarily clear the Check Engine Light, but it won't address the underlying issue causing the fault code. It's important to diagnose and repair the problem to prevent it from recurring.
8. How much does it typically cost to repair OBDII code P2128 in a BMW?
- The cost of repairing OBDII code P2128 can vary depending on the specific cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It's best to consult a mechanic for an accurate estimate.
9. Can a faulty throttle/pedal position sensor cause OBDII code P2128 in a BMW?
- Yes, a faulty throttle/pedal position sensor is a common cause of OBDII code P2128 in a BMW. If the sensor is sending incorrect voltage signals to the engine control module, it can trigger the code.
10. How important is it to address OBDII code P2128 promptly in a BMW?
- It is important to address OBDII code P2128 promptly as ignoring the issue can lead to further damage to the engine or drivetrain components, and may result in unsafe driving conditions.
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