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P2127 on CHEVROLET IMPALA

Throttle/Pedal Position Sensor/Switch E Circuit Low

NHTSA Reports
2
Severity
Medium
Most Affected
2009, 2010
Crashes / Fires
0 / 0
Source: NHTSA Complaints Database · SAE J2012

What P2127 Means on Your CHEVROLET IMPALA

P2127 is a diagnostic trouble code indicating: Throttle/Pedal Position Sensor/Switch E Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 CHEVROLET IMPALA owners have reported this issue to NHTSA across model years 2009-2010. Most reports come from the 2009, 2010 model years. The most commonly reported component is Electrical System,Electronic Stability Control (Esc),Engine (50.0% of reports).

Real CHEVROLET IMPALA Owner Reports

Source: NHTSA Complaints Database

"I cranked my 2009 chevrolet impala leaving a nearby gas station and the message service traction control flashed, then engine power reduced, and the check engine light came on. my car drove sluggish home at a very slow speed. luckily i was only about 5 minutes from home."

— 2009 CHEVROLET IMPALA owner · ELECTRICAL SYSTEM,ELECTRONIC STABILITY CONTROL (ESC),ENGINE · Filed 08/30/2014

"Service stabilitrak message displayed and reduced engine power to 0 mph while driving. Throttle body, Accelerator pedal position sensor (whole pedal assembly), and ecm replaced. Issue continues. P2138, P2122, P2127 codes present. Stonebriar chevrolet incompetent to resolve."

— 2010 CHEVROLET IMPALA owner · POWER TRAIN,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL · Filed 08/15/2021

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

📊 Complaint Trend by Model Year

1
'09
1
'10

Common Causes on CHEVROLET IMPALA

Based on NHTSA complaint component analysis for this vehicle.

ELECTRICAL SYSTEM,ELECTRONIC STABILITY CONTROL (ESC),ENGINE 50%
POWER TRAIN,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL 50%

What To Do Next

  1. 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. 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. 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 P2127 mean on a CHEVROLET IMPALA? ▾
P2127 indicates: Throttle/Pedal Position Sensor/Switch E Circuit Low. This is a powertrain code. 2 CHEVROLET IMPALA owners have reported this to NHTSA.
What are the most common causes of P2127 on CHEVROLET IMPALA? ▾
Based on 2 NHTSA reports, the most commonly cited components are: Electrical System,Electronic Stability Control (Esc),Engine, Power Train,Electrical System,Vehicle Speed Control. These percentages are based on the component field in owner complaints.
Is P2127 serious on my CHEVROLET IMPALA? ▾
Of 2 NHTSA reports for this code on CHEVROLET IMPALA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.
What should I do if my CHEVROLET IMPALA shows P2127? ▾
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.

P2127 on Other Vehicles

CHEVROLET MALIBU
5 reports
KIA SORENTO
2 reports
→ All codes reported on CHEVROLET IMPALA