For a Dodge with electronic throttle control, resetting the throttle position sensor typically means performing a throttle relearn or ETC learn. This can be done with a scan tool or via a power-down reset and pedal-learn procedure. Procedures vary by model and year, so consult your owner’s manual or a professional tool if in doubt.
Understanding the Dodge throttle system
Most modern Dodges use an electronic throttle body (ETC) connected to the Powertrain Control Module (PCM). The PCM learns idle and throttle response over time. When a sensor fault, vacuum leak, or dirty throttle body occurs, the PCM’s learned values may become misaligned. A proper relearn helps ensure the PCM uses correct data from the Throttle Position Sensor (TPS) and pedal position sensor (PPS).
How to reset: two main paths
Path A: Relearn with an OBD-II scan tool (recommended)
Using a scan tool that supports the Dodge/Chrysler Throttle Relearn function is the most reliable method. It prompts you through the exact steps and ensures the PCM updates TPS data correctly.
- Make sure the engine and coolant are at normal operating temperature and the battery is in good condition.
- Connect the OBD-II scan tool to the vehicle's DLC and turn the ignition to ON (engine OFF).
- Navigate to the Powertrain/ECU section and select "Throttle Relearn" or "TPS Learn" (the exact name varies by tool).
- Follow the tool prompts. You may be asked to start the engine, or to allow the PCM to perform the relearn with the throttle pedal in a specific position.
- Start the engine and let it idle at a normal RPM until the PCM confirms the relearn is complete (often indicated on the tool or by a no-error code).
- Drive the vehicle for a short test drive (often 5–10 minutes) with light-to-moderate throttle to complete adaptive learning.
Carrying out the relearn with a proper scan tool ensures the PCM correctly maps the TPS and pedal position data across the operating range.
Path B: Manual relearn without scan tool (power-down and pedal-learn method)
If you don’t have a compatible scan tool, you may be able to perform a basic relearn using a power-down reset followed by a pedal learn. The exact procedure can vary by model and year, so consult the owner's manual or a service bulletin for your Dodge.
- Inspect for obvious issues: vacuum leaks, dirty throttle body, loose connections, or a faulty TPS. Repair any faults before attempting a relearn.
- With the ignition OFF, disconnect the negative battery cable and wait 10–15 minutes to clear adaptive memory.
- Reconnect the battery, then turn the ignition to ON (do not start the engine). Wait about 2–3 seconds, then turn the ignition OFF and repeat once or twice as your manual recommends.
- With the ignition ON (engine still OFF), slowly press and release the accelerator pedal to the floor three times within 5–7 seconds to perform a basic pedal learn. Some vehicles require this step after a power reset; if yours does not, skip it.
- Start the engine and idle for several minutes to allow the ECU to settle. Drive normally for 10–15 minutes to complete adaptive learning.
Note: The pedal-learn sequence and timing can differ; if you have a Mopar tool or a service bulletin for your model, use that procedure exactly.
Common issues to check before and after relearn
TPS relearn won't fix mechanical problems. If the engine runs poorly after the relearn, check for: vacuum leaks, dirty or sticking throttle body, malfunctioning TPS or PPS sensors, faulty wiring, or a faulty PCM. Look for codes such as P0120, P0121, P0220, or related issues and address as needed.
- Vacuum leaks around the intake manifold or throttle body seals.
- Dirty or sticking throttle body plate causing incorrect airflow readings.
- Damaged or misadjusted TPS or pedal position sensor wiring or connectors.
- Electrical or PCM faults that may require professional diagnosis.
Because Dodge engines and electronic throttle systems vary by model and year, always verify the exact procedure for your specific vehicle. If in doubt, consult a dealer or qualified shop.
Safety and maintenance tips
Working with the throttle system involves air intake and electrical components. Disconnecting the battery can reset other systems; be prepared to re-enter radio codes or other settings. Perform this procedure in a well-ventilated area and ensure the vehicle is secured and off during resets.
Summary
Resetting a Dodge’s throttle position sensor typically means performing an electronic throttle relearn. The most reliable method uses an OBD-II scan tool with a Throttle Relearn function. If you don’t have the tool, you can attempt a power-down reset followed by a pedal-learn sequence, though steps vary by model and year. Always fix underlying issues like vacuum leaks or a dirty throttle body first, and consult your owner’s manual or a Mopar service bulletin for model-specific instructions or seek professional help if unsure.