The P2138 code on a Dodge Ram 1500 is related to the accelerator pedal position sensor circuit. It indicates a range/performance issue with the sensor .
The four main issues that can cause the P2138 code are:
1. Accelerator pedal position sensor malfunction
2. Throttle position sensor malfunction
3. Wiring issue
4. Powertrain control module (PCM) issue
Among these issues, the PCM is usually the least likely cause, unless there is a technical service bulletin (TSB) for your specific engine and model year.
To diagnose the problem, you can use a multimeter to check if the voltage coming from the throttle position sensors and accelerator position sensor is within the manufacturer’s specifications. If the voltage is out of range, you may need to replace the sensor that is causing the issue.
It is recommended to address the issue causing the P2138 code as soon as possible, as your vehicle may have trouble accelerating or go into reduced-power mode when this code is triggered.
Please note that the information provided is based on the search results and may not cover all possible causes and solutions for the P2138 code. It is always best to consult with a qualified mechanic or contact your local Dodge dealer for a more accurate diagnosis and repair guidance.
Contents
- How do I reset my throttle position sensor manually?
- How do you reset the accelerator pedal sensor?
- How do you know if your electronic throttle control is bad?
- How do I reset my accelerator sensor?
- How do I manually reset my electronic throttle control?
- What is throttle pedal position sensor switch D?
- How do you reset the electronic throttle control system on a Dodge Ram?
- How do I know if my throttle pedal position sensor is bad?
- How do I fix engine code P2138?
- What happens when accelerator pedal sensor goes bad?
How do I reset my throttle position sensor manually?
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
How do you reset the accelerator pedal sensor?
Whatever. You choose to do leave it like that for at least 5 minutes. This usually resets disconnected electronic components which then forget all the adaptations. And revert to factory settings.
How do you know if your electronic throttle control is bad?
The throttle body controls the engine’s air supply, and it comes in mechanical and electronic versions. The common warning signs of a bad throttle body are an illuminated check engine light, reduced engine power, rough idling, stalling, and rare cases of misfires and rough running.
How do I reset my accelerator sensor?
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
How do I manually reset my electronic throttle control?
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
What is throttle pedal position sensor switch D?
This position sensor is part of your car’s electronic throttle control system (ETCS). When you press the accelerator, it causes the TPS to send a signal to your PCM, which will tell the PCM how much power you need depending on how far you’ve pressed that pedal.
How do you reset the electronic throttle control system on a Dodge Ram?
Instead, you can try the following steps to reset the ETC system: Press the Start/Stop button once to turn on the ignition without starting the engine. Wait for a few seconds. Press the accelerator pedal and keep your foot on it for 5 seconds.
How do I know if my throttle pedal position sensor is bad?
A car driver can instantly identify when the car hesitates when pressing the accelerator pedal. It is one of the common signs of a bad accelerator position sensor when it doesn’t send the correct signals. Incorrect fuel delivery can be a cause of sluggish car acceleration.
How do I fix engine code P2138?
What Repairs Can Fix the P2138 Code?
- Replace the throttle body motor or throttle body assembly.
- Repairing or replacing the wire connected to the throttle body motor.
- Changing the throttle position sensor.
- Repairing or replacing wire related to TPS.
- Replacing the PCM.
What happens when accelerator pedal sensor goes bad?
You may also experience no acceleration. So basically overall you’re going to explore some sort of acceleration. Issue. So basically that’s going to be the first symptom of a bad app sensor.
