Fault Code Lookup › Powertrain codes › P2122

P2122 Powertrain · generic OBD-II

Throttle/Pedal Position Sensor/Switch 'D' Circuit Low Input

P2122 is a standard code covering engine, transmission, fuel and emissions. It names the system that logged the fault, not the part that failed. Below: which cars owners reported it on, what happened, and recalls on those cars, from 17 complaints filed with NHTSA. Updated November 9, 2026.

  • 17owner reports
  • 12car models
  • 0mention a crash
  • 0mention a fire
  • 2012–2021model years

Which cars get code P2122?

Every model whose owners mentioned P2122 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.

Where does P2122 show up?

By brand

  • Chevrolet7
  • Jeep5
  • Dodge3
  • Ford1
  • GMC1

Component the owner filed it under

  1. Vehicle Speed Control6 (35.3%)
  2. Engine5 (29.4%)
  3. Electrical System5 (29.4%)
  4. Electronic Stability Control (ESC)3 (17.6%)
  5. Fuel/Propulsion System3 (17.6%)
  6. Power Train3 (17.6%)

Is there a recall for P2122?

The others concern the component owners file this code under (Vehicle Speed Control) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.

Vehicle Speed Control: Accelerator Pedal Chrysler Group LLC (Chrysler) is recalling certain model year 2014 Dodge Durango vehicles manufactured January 16, 2014 to April 8, 2014, Jeep Grand Cherokee vehicles manufactured January 16, 2014 to April 8, 2014, Jeep Grand Cherokee SRT vehicles manufactured February 3, 2014 to April 8, 2014, and… NHTSA campaign 14V293000 · June 4, 2014 · Affected cars

2014 Dodge Durango. Full risk and remedy on each car's report.

What happened when owners saw P2122?

10 of the 17 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.

Check engine light came on. Display stated that the engine will run at reduced power which meant we had to Limp home at 15 MPH which put us in a dangerous situation. I read the code and it was P2122. Throttle/Pedal Position Sensor/Switch “D” Circuit Low Input. This indicates that there is a problem with the accelerator pedal. I replaced the pedal myself at a cost of $114.00. I eventually found a technical service bulletin that admitted that there is a problem with the accelerator pedal on 2016 to 2018 GM vehicles and there was a program that was replacing the pedal until 2020. I called GM customer service and they said there was nothing they would do about it since the program expired in…
2017 Chevrolet MalibuVehicle Speed ControlNHTSA complaint 11558445 · Dec 4, 2023
Driving along and Reduced Engine Power warning message came on said can not go above 20 mph but yet car still could be accelerated above 20mph. Pulled over when could. Stopped car and turned it off and on. message gone but engine warning light still on. OBD2 stated P2122 error. Upon reviewing internet there are class action lawsuits going on because can create a very dangerous scenario if car suddenly stops in the middle of the highway.
2016 Chevrolet ImpalaVehicle Speed ControlNHTSA complaint 11452334 · Feb 16, 2022
Throttle body sensor, throttle body injector, and acceleration pedal are failing. I was in traffic and my car went into limp mode because of a code P2122 which is the throttle body sensor. My car did not want to go faster than 10 miles an hour.
2019 Jeep RenegadePower Train, Electrical System, Unknown Or OtherNHTSA complaint 11558468 · Dec 5, 2023
DRIVING CAR NORMALLY. I PARKED IN A PARKING LOT AND WENT INTO A STORE. WHEN I CAME OUT TO START THE CAR IT WOULD NOT START. CHARGING INDICATOR LIGHT AND CHECK ENGINE LIGHT CAME ON. AUTO ZONE WAS IN THE PLAZA SO I HAD THE GUY COME OUT AND DO A DIAGNOSTIC. CODES WERE P0123, P2122, P2127, P0222, U0401. WHEN THE GUY WENT BACK INTO THE STORE THE CAR STARTED. WHEN I PARKED AGAIN 10 MINUTES LATER THE CHECK ENGINE AND CHARGE LIGHT DISAPPEARED. CAR RAN FINE FOR ONE DAY. ABOUT 33 HOURS AFTER THAT INCIDENT I PARKED THE CAR AT A PARK FOR LUNCH FROM WORK. TOOK A WALK AND WHEN I RETURNED CAR NEVER CAME ON. DASH WAS FLICKERING, ALL LIGHTS ILLUMINATED, MILEAGE WAS FLASHING, GAUGES WERE FLICKERING, CAR WOULD…
2015 Dodge DartElectrical System, Air Bags, Service BrakesNHTSA complaint 11138905 · Oct 7, 2018
The P2122 OBD-II trouble, or fault, code means that the vehicle's on-board computer has detected low voltage in the throttle position sensor (TPS), which is usually below 0.17 volts. The battery is also at 8.3 volts indicating a potential short somewhere and potentially a faulty alternator. This is not what you want while driving a vehicle.
2019 Jeep CherokeePower Train, Vehicle Speed ControlNHTSA complaint 11433436 · Sep 18, 2021
DURING ANY TYPE OF MOISTURE IE (FOG, RAIN) VEHICLE GOES INTO REDUCED ENGINE POWER MODE CODES FROM THE ECM P2122 AND P2138 BOTH RELATING TO APP. FIRST TIME IT HAPPENED WAS IN RAIN STORM IN MOTION, APP PEDAL WAS REPLACED WITH NEW OEM PART BUT THE PROBLEM PERSISTS. I SUSPECT WATER INTRUSION FROM WIPER COWLING AFFECTING ELECTRIC HARNESS. THIS PROBLEM DOES NOT EXIST DURING DRY SEASON. AFTER MANY HOURS OF ONLINE RESEARCH I HAVE FOUND THAT THIS IS A WIDESPREAD PROBLEM IN CHEVROLET VEHICLES.
2016 Chevrolet ColoradoElectrical System, EngineNHTSA complaint 11389643 · Jan 24, 2021
I WAS DRIVING WHEN MY CHECK ENGINE LIGHT CAME ON. I GOT AN ERROR MESSAGE FOR LOSS OF TRACTION CONTROL AND SERVICE STABILITRACK. ADDITIONAL MESSAGE, ENGINE POWER REDUCED BUT WAS STILL ABLE TO DRIVE BUT AT A DECREASED SPEED. I WAS ABLE TO INCREASE SPEED BY USING RPM GAUGE AND SHIFTING TRANSMISSION BY PRESSING AND RELEASING ACCELARATOR TO SIMULATE MANUAL SHIFTING. I EVENTUALLY PULLED OVER OFF THE ROAD, TURNED OFF THE ENGINE AND RESTARTED. EVERYTHING APPEARED TO RETURN TO NORMAL UNTIL IT HAPPENED AGAIN THE FOLLOWING DAY WHILE DRIVING OUT OF MY DRIVEWAY. GOT AN OBD SCAN AND CODES WERE P2122 AND P2138. ADVISED THIS WAS A RECALL IN THE 2010 MODEL- HOW IS IT STILL HAPPENING IN MODELS THREE YEARS…
2013 Chevrolet TraverseElectronic Stability Control (ESC), EngineNHTSA complaint 10809217 · Dec 9, 2015
TAKATA RECALL. VEHICLE DO NOT START, AND CHECK ENGINE LIGHT CAME ON.I TOOK IT TO O'REILLY'S AUTO PARTS AND CONNECTED THE MACHINE AND GIVE ME THE FOLLOWING ERRORS: P2122, U1110, U11BC, U0100, U0101, AND U1120 REFERENCE TO THE COMMUNICATION TO TCM, AND PCM WITH THE VEHICLE. I ALSO TOOK MY VEHICLE FOR A SOFTWARE RECALL WITH THE PCM.
2014 Dodge DurangoElectronic Stability Control (ESC)NHTSA complaint 11153349 · Nov 23, 2018
02/08/17NHTSA ID: 10090975 TSB ID: SSM 46139 SOME 2015-2016 F-150 VEHICLES MAY EXPERIENCE INTERMITTENT LOSS OF THROTTLE PEDAL RESPONSE, ILLUMINATED WRENCH, HILL DESCENT, AIRBAG, ANTI LOCK BRAKE SYSTEM(ABS) AND/OR ADVANCED TRAC WARNING INDICATORS AND/OR P2122, P2123, P2124, P2125, P212COMMUNICATION NUMBER: SSM 46829, DATE: 2017-09-20 CATEGORY: 118500 ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL SUMMARY: SOME 2015-2017 F-150 VEHICLES MAY EXPERIENCE INTERMITTENT LOSS OF THROTTLE PEDAL RESPONSE, ILLUMINATED WRENCH, HILL DESCENT, AIRBAG, ANTI LOCK BRAKE SYSTEM(ABS) AND/OR ADVANCED TRAC WARNING INDICATORS HILL ASSIST TRACTION CONTROL LOSS OF POWER NO THROTTLE OR POWER STEERING I HAD SIMILAR…
2015 Ford F-150EngineNHTSA complaint 11092319 · May 7, 2018
The contact owns a 2021 GMC Acadia. The contact stated while driving 50 MPH, the vehicle suddenly decelerated to 35 MPH. The vehicle stalled, and the "Steering Assistance Reduced" message was displayed. The vehicle was restarted. The vehicle was taken to the local dealer the following day, where it was diagnosed that the accelerator pedal and terminal connector were bent. The dealer retrieved DTC codes: P2138, and P2122. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 27,792.
2021 GMC AcadiaSteering, Vehicle Speed ControlNHTSA complaint 11616263 · Sep 24, 2024

P2122: questions drivers ask

What does code P2122 mean?

P2122 is a generic OBD-II powertrain code. Its standard definition is "Throttle/Pedal Position Sensor/Switch 'D' Circuit Low Input". The code tells you which system set the fault, not which part failed; the owner reports on this page show what it meant in practice for 12 car models.

Which cars get code P2122 most often?

In NHTSA owner complaints, P2122 is mentioned most for the Chevrolet Malibu (4), Chevrolet Impala (3), Jeep Renegade (3), across 12 models and model years 2012 to 2021. Popular models collect more reports because more of them are on the road.

Is there a recall for code P2122?

No NHTSA recall text names P2122 directly. 1 recall on the cars that report this code concerns the same component owners name most (Vehicle Speed Control); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.

What should I do if my car shows P2122?

Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.

How this page was made

CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of P2122. The definition is the generic SAE J2012 wording; a carmaker may use the code slightly differently. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.

Is something missing or wrong on this page? Tell CarHooq. One line is enough; every message is read.

Look up another code

Or check a car: Problem Lookup · Used-car checker