P2122 on CHEVROLET MALIBU — Throttle/Pedal Position Sensor/Switch D Circuit Low

Q: "What does P2122 mean on a CHEVROLET MALIBU?"

"P2122 indicates: Throttle/Pedal Position Sensor/Switch D Circuit Low. This is a powertrain code. 4 CHEVROLET MALIBU owners have reported this to NHTSA."

Q: "What are the most common causes of P2122 on CHEVROLET MALIBU?"

"Based on 4 NHTSA reports, the most commonly cited components are: Vehicle Speed Control, Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints."

Q: "Is P2122 serious on my CHEVROLET MALIBU?"

"Of 4 NHTSA reports for this code on CHEVROLET MALIBU, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my CHEVROLET MALIBU shows P2122?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P2122 Means on Your CHEVROLET MALIBU

P2122 is a diagnostic trouble code indicating: Throttle/Pedal Position Sensor/Switch D Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

4 CHEVROLET MALIBU owners have reported this issue to NHTSA across model years 2016-2017. Most reports come from the 2016, 2017 model years. The most commonly reported component is Vehicle Speed Control (75.0% of reports).

Real CHEVROLET MALIBU Owner Reports

Source: NHTSA Complaints Database

"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."

— 2016 CHEVROLET MALIBU owner · VEHICLE SPEED CONTROL · Filed 02/10/2022

"Several times a week my car will suddenly go into "engine power reduced" mode and go into low speed. if i get out of the car, lock it, and unlock it 30 seconds later it will reset and then be okay for a few minutes."

— 2016 CHEVROLET MALIBU owner · VEHICLE SPEED CONTROL · Filed 01/01/2021

"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."

— 2017 CHEVROLET MALIBU owner · VEHICLE SPEED CONTROL · Filed 10/22/2023

"I purchased a 2017 chevy malibu in april 2017 with 11 miles. in less than a month, the car started having issues."

— 2017 CHEVROLET MALIBU owner · ENGINE,FUEL/PROPULSION SYSTEM · Filed 03/17/2019

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

2

'16

2

'17

Common Causes on CHEVROLET MALIBU

Based on NHTSA complaint component analysis for this vehicle.

VEHICLE SPEED CONTROL 75%

ENGINE,FUEL/PROPULSION SYSTEM 25%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P2122 mean on a CHEVROLET MALIBU? ▾

P2122 indicates: Throttle/Pedal Position Sensor/Switch D Circuit Low. This is a powertrain code. 4 CHEVROLET MALIBU owners have reported this to NHTSA.

What are the most common causes of P2122 on CHEVROLET MALIBU? ▾

Based on 4 NHTSA reports, the most commonly cited components are: Vehicle Speed Control, Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints.

Is P2122 serious on my CHEVROLET MALIBU? ▾

Of 4 NHTSA reports for this code on CHEVROLET MALIBU, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my CHEVROLET MALIBU shows P2122? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.