P2124 Fault Code

Throttle/Pedal Position Sensor/Switch D Circuit Intermittent

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2124 fault code indicates an intermittent issue with the throttle or pedal position sensor/switch D circuit. This code is triggered when the Engine Control Module (ECM) detects a signal that varies outside of the normal operational parameters, causing the throttle position to be improperly reported.

• The throttle position sensor plays a critical role in the engine management system, providing feedback about the position of the accelerator pedal.
• An intermittent fault may lead to unpredictable engine behavior, impacting performance and drivability.

What are the symptoms of the P2124 code?

When the P2124 code is present, drivers may experience:

• Check Engine Light illuminated on the dashboard.
• Unresponsive or erratic throttle response when accelerating.
• Sudden loss of power or stalling under certain conditions.
• Difficulty in maintaining a consistent speed.

What causes the P2124 code?

Several potential causes can lead to the P2124 code, including:

• Faulty throttle position sensor or switch.
• Damaged wiring or poor connections within the circuit.
• Corroded terminals that may interfere with signal transmission.
• Software issues or ECM calibration problems.

How to fix P2124?

To resolve the P2124 fault code, follow these steps:

1. Inspect the throttle position sensor and associated wiring for damage or corrosion.
2. Test the throttle position sensor, and replace it if it's faulty.
3. Check all connections and terminals for cleanliness and secure fit.
4. Clear the fault code using an OBD-II scanner and perform a test drive to verify the issue is resolved.
5. If the problem persists, consider reprogramming or updating the ECM if a software issue is suspected.