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P2138 on CHEVROLET CAMARO

Severity
Medium
NHTSA Reports
4
Most Affected
2011, 2012, 2020

What P2138 Means on Your CHEVROLET CAMARO

Real CHEVROLET CAMARO Owner Reports (Source: NHTSA Complaints Database)

"I was driving my vehicle to school, and all the sudden i get a message saying "Engine Power Reduced!" as soon as that happened, my vehicle's speed decreased rapidly. making it hard to keep up at the same speed as traffic, I plugged my scan tool."

— 2011 CHEVROLET CAMARO owner • UNKNOWN OR OTHER • Filed 11/12/2024

"Car has new engine and transmission everything is new and well maintained, p2138 pops up throttle quits working causing me to almost wreck into another vehicle, I was stuck in traffic 1 hour waiting for a tow truck, 7 shops have worked on the issue and replaced every part including all the technic"

— 2011 CHEVROLET CAMARO owner • ELECTRICAL SYSTEM,ENGINE • Filed 01/16/2023

"I am experiencing similar issues to those identified in GM bulletin 07-06-04-019F. I keep getting DTC P2138. What component or system failed or malfunctioned, and is it available for inspection upon request? The throttle/accelerator system. Yes."

— 2012 CHEVROLET CAMARO owner • ELECTRICAL SYSTEM • Filed 12/17/2025

"At random times the car will get the check engine light (Code P2138 when scanned) & show a message on the dash saying “engine power reduced”. This happened to me twice while driving on the highway & 4 other times while driving on city streets."

— 2020 CHEVROLET CAMARO owner • ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL • Filed 04/17/2021

Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.

Common Causes of P2138 on CHEVROLET CAMARO

25%
25%
25%
25%

Percentages based on NHTSA complaint component analysis for this vehicle.

Complaint Trend by Year

2011
2
2012
1
2020
1

What To Do Next

  1. 1
    Check for recalls on YOUR VIN

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.

  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.

P2138 on Other Vehicles

Data sourced from the National Highway Traffic Safety Administration (U.S. Department of Transportation) and the SAE J2012 OBD-II standard. Code definitions follow the SAE J2012 / ISO 15031-6 standard. Owner reports are filed directly with NHTSA by vehicle owners. This information is provided for educational purposes only and should not replace professional automotive diagnosis. Always consult a qualified mechanic for vehicle repair decisions.

Last updated: March 2026