P2128 Infiniti Code - Accelerator Pedal Position Sensor Circuit
Quick Answer
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) Sensor 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 Infiniti indicates Accelerator Pedal Position Sensor Circuit.
- Common causes
- Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) Sensor 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 Infiniti Description
What are the Possible Causes of the DTC P2128 Infiniti?
- Faulty Accelerator Pedal Position (APP) Sensor
- Accelerator Pedal Position (APP) Sensor harness is open or shorted
- Accelerator Pedal Position (APP) Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
- Electric Throttle Control Actuator(Throttle Body)
How to Fix the DTC P2128 Infiniti?
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 Infiniti 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 Infiniti Code
1. What does OBDII code P2128 mean on an Infiniti?
Code P2128 indicates a high voltage issue in the Accelerator Pedal Position Sensor (APP) Circuit 2, which monitors the position of the accelerator pedal.
2. What are the symptoms of a P2128 code in an Infiniti?
Common symptoms include reduced engine performance, difficulty accelerating, the vehicle entering "limp mode," and the check engine light turning on.
3. What causes the P2128 code to appear in an Infiniti?
Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning engine control module (ECM).
4. Can I drive my Infiniti with a P2128 code?
Driving with a P2128 code is not recommended, as the vehicle may enter limp mode or experience unsafe acceleration issues.
5. How do I fix a P2128 code on an Infiniti?
Repairs may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, or in rare cases, reprogramming or replacing the ECM.
6. How do I diagnose a P2128 code in my Infiniti?
Diagnosis includes checking the accelerator pedal position sensor voltage, inspecting wiring and connectors for damage, and confirming the ECM is functioning properly.
7. Can a dirty throttle body cause a P2128 code?
While a dirty throttle body can cause acceleration issues, it is not typically related to the P2128 code, which is specific to the APP sensor circuit.
8. How much does it cost to repair a P2128 code on an Infiniti?
Repair costs vary but can range from $100 to $400, depending on whether the issue is with the sensor, wiring, or ECM.
9. Is the accelerator pedal position sensor the same as the throttle position sensor?
No, the accelerator pedal position sensor measures pedal input, while the throttle position sensor monitors the throttle body’s position.
10. Can I reset the P2128 code without repairing the issue?
Clearing the code with an OBDII scanner is possible, but the issue will likely return unless the underlying problem is resolved.
Discuss the causes and fixes for P2128 Infiniti OBDII Code
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