P0122 Dodge Cummins: Throttle Position Problem Or More?
Wondering what the p0122 dodge cummins code means to your car? The p0122 is a diagnostic trouble code that means ‘Throttle Position Sensor/Switch A Low Circuit Input.’
There are numerous diagnostic trouble codes, each expressing specific issues. P0122 is one of them. So when the check engine light gets ON or lights up on your vehicle, you should scan the diagnostic code to figure out what fault caused this code.
However, one should learn about the potential causes and signs behind this DTC before diagnosing. This article will help you understand what to do when the p0122 fault code pops up in your car.
So without delaying anymore, let’s jump into the main discussion.
P0122 Dodge Cummins
The p0122 Cummins code signifies the cummins throttle position sensor problems. The code stands for throttle position switch/sensor circuit A low input. When the throttle position sensor A exhibits lower voltage than usual, the PCM (powertrain control module) logs the p0122 DTC.
The throttle position switch or sensor keeps track of the throttle position in a vehicle. The sensor is placed on the throttle body. But sometimes, in the case of new cars, the fault code may define an issue with the electronic throttle pedal.
The throttle position sensor voltage can decrease for some specific reasons. Here are some possible causes and signs behind the PCM logging a P0122 trouble code shown in the table.
| Potential Causes | Symptoms |
| Defective sensor | Overflowing |
| Damaged throttle position switch | Low, very high, or harsh idle |
| Loosely-mounted throttle position switch | Engine stalling |
| Faulty connections and wirings | Zero or minimal acceleration |
| PCM issues | Hard accelerating |
| Sensor circuit electrical short | Hard starting engine |
Let’s Fix Throttle Position Sensor P0122
Defective sensor
If a faulty sensor triggers the po122 dodge code, replace the defective throttle position sensor.
Damaged throttle position switch
A damaged or defective throttle position switch can cause your vehicle’s error code to display. Replacing or repairing can fix the issue. Carefully diagnose the TPS sensor before replacing it.
Loosely-mounted throttle position switch
The TPS voltage may drop lower than the average voltage because of a loosely-mounted TP switch. When the voltage decreases to 0.078 volts, the fault code is triggered. Plugin correctly and repairing the witch may fix the issue.
Check the sensor replacement instruction if you still see the p0122 fault code even after replacing the sensor recently.
Read Also: What Is The Meaning Of The P0541 Cummins Code And How To Fix It?
Faulty connections and wirings
Visually inspect all the wires and connections. Repair the cables and connectors if there are any bent, broken, or damaged connections.
PCM issues
Sometimes, the TPS fault code may arise because of the Powertrain Control Module problem. In this case, replacing the PCM can fix the 2nd gen cummins throttle position sensor issues.
Sensor circuit electrical short
The Accelerator Pedal Position Sensor (APPS) voltage can drop low because of the electrical short sensor circuit. However, repair the short circuit or replace it to fix the fault code.
Cummins Throttle Position Sensor Reset
To do the apps reset cummins sensor, follow the instructions given below-
- First, disconnect the batteries. And reconnect them after leaving them disconnected for 30 minutes.
- Put the key to ON position.
- Now, press the throttle pedal to the floor and release it slowly without starting the engine.
- Then, put the key to the OFF position.
This Video Will Help You Too!
Frequently Asked Questions (FAQs)
How do you reset the throttle position sensor on a Dodge Cummins?
To reset the TPS on a dodge Cummins:
1. Disconnect the batteries, and reconnect after leaving disconnected for 30 minutes.
2. Set the key to the ON position.
3. Press the throttle pedal and release it slowly without starting the engine.
4. At last, turn the key to the OFF position.
What does the P0122 dodge code mean?
The p0122 is a diagnostic trouble code that means ‘Throttle Position Sensor/Switch A Circuit Low Input.’ When the throttle position sensor A exhibits lower voltage than usual, the PCM logs the p0122 DTC. The throttle position switch or sensor keeps track of the throttle position in a vehicle. But sometimes, especially in the case of new cars, the fault code may define an issue with the electronic throttle pedal.
How do you reset the TPS on a 2001 Cummins?
Whether it is the 2001 year model or other resetting process is almost the same. You can disconnect the battery and leave it for 30 seconds disconnected. And after that, reconnect the battery and turn on the ignition key. Now, press on the TP and release it without starting engine, and finally, turn off the engine.
Final Verdict
Now that we have come to an end hope you have learned quite about the p0122 dodge cummins trouble code. Now you can visually inspect and diagnose the potential causes after seeing the symptoms mentioned above in this article. Although, figuring out the exact cause of this diagnostic trouble code may get tricky sometimes.
So it is always recommended to consult a mechanic to fix this code. Unless you are a professional or confident enough to try your DIY skills, however, make sure to diagnose the error code properly by following the manual instructions.
You Can Also Read:
- P0234 Cummins- We Have Found 5 Major Causes+ Quick Fixing Guide!
- P0191 Cummins: What is The Meaning Of The Code and How To Fix it?
- [We Found 9 Causes] P207f Cummins- All About Reductant Quality Performance!
D Conroy
Meet our senior writer and content manager of Automasterx. He has worked in several mechanical garages and mastered different vehicle diagnoses and parts repair. He never stops until finding out the ultimate solutions for any vehicle fault code. However, ensuring the only solid solutions for each vehicle malfunction is his core part of the duty, alongside analyzing fault codes and signals.
