The P2124: Throttle/Pedal Position Sensor/Switch ‘D’ Circuit Intermittent refers to an issue where the throttle or pedal position sensor ‘D’ is experiencing intermittent faults. This could be caused by loose or corroded connections, wiring issues, or a faulty sensor.
P2124 – Quick Overview
Code | Information |
---|---|
Meaning | P2124: Throttle/Pedal Position Sensor/Switch ‘D’ Circuit Intermittent |
Is it serious? | Yes, it can cause erratic throttle response, affecting drivability. |
Possible causes | – Intermittent fault in the throttle/pedal position sensor ‘D’ – Loose or corroded connections – Faulty sensor |
How to diagnose? | – Check for loose or corroded connections – Test the sensor for intermittent faults – Inspect wiring for damage |
P2124 Meaning
The P2124 code indicates that the throttle or pedal position sensor ‘D’ is experiencing an intermittent electrical issue. This could cause unpredictable throttle behavior, making the vehicle difficult to control. The issue is likely caused by loose or corroded connections, damaged wiring, or a malfunctioning sensor.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for any other related codes that might provide more context for the issue. | OBD-II Scanner |
Inspect Wiring and Connectors | Visually inspect the wiring and connectors for throttle/pedal position sensor ‘D’ for any signs of damage, loose connections, or corrosion. | Flashlight, Multimeter |
Check for Loose or Corroded Connections | Make sure all connections to the sensor are secure and free of corrosion. Clean or tighten as necessary. | Contact Cleaner, Flashlight |
Test Sensor for Intermittent Faults | Use a multimeter or diagnostic tool to monitor the sensor’s signal over time to check for intermittent failures or fluctuations. | Multimeter, Diagnostic Tool |
Inspect Wiring for Damage | Perform a detailed inspection of the sensor’s wiring for any signs of wear, tears, or other damage that could cause intermittent faults. | Flashlight, Multimeter |
Clear the Code and Test Drive | After making repairs or adjustments, clear the code using an OBD-II scanner and take the vehicle for a test drive to ensure the issue has been resolved. | OBD-II Scanner |
Recheck for Codes | After the test drive, re-scan the vehicle to confirm that the P2124 code has not returned. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)