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P2128: Throttle/Pedal Position Sensor/Switch E Circuit High

Severity
Low
NHTSA Reports
3
Vehicles Affected
3
System
Powertrain

What Does P2128 Mean?

P2128 is a diagnostic trouble code indicating: Throttle/Pedal Position Sensor/Switch E Circuit High. This code relates to the powertrain system. It has been reported in NHTSA complaints across 3 different vehicle models.

Common Causes

P2128 Reports by Year

2016
1
2021
1
2010
1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"I WAS DRIVING ALONG ON A CITY STREET AT NIGHT AND SUDDENLY BOTH THE CHECK ENGINE AND TRAC OFF LIGHTS ILLUMINATED AND THE VEHICLE LOST SPEED. I TRIED DEPRESSING THE ACCELERATOR ALL THE WAY, BUT THE SPEED COULD NOT EXCEED 25 MPH. SO, I TOOK IT TO THE DEALER AND THE DIAGNOSTIC OBD-II CODE WAS P"

— Toyota Camry owner, 02/15/2016

"In June 2016, my Honda CR-V 2015 broke down, lost all power, and stopped working in the middle of the road. The vehicle was towed to a Honda Dealership - Diamond Bar, CA. The Honda Mechanic diagnosed a P2138, did not solve the problem, and sent me home. The vehicle broke down once again, only for th"

— Honda Cr-V owner, 08/13/2021

"TL* THE CONTACT OWNS A 2008 GMC YUKON XL. THE CONTACT STATED THAT THE VEHICLE WOULD ONLY ACCELERATE TO 10 T0 15 MPH. IN ADDITION, THE STABILITRAC, ENGINE CONTROL MODULE, AND ENGINE POWER REDUCED INDICATORS ILLUMINATED. THE CONTACT WAS ABLE TO DRIVE THE VEHICLE ONTO THE ROAD SHOULDER. THE VEHICLE WAS"

— Gmc Yukon owner, 02/01/2010

Source: NHTSA Complaints Database

Most Reported Vehicles for P2128

Based on NHTSA owner complaint data.

# Vehicle Reports
1 TOYOTA CAMRY
2 HONDA CR-V
3 GMC YUKON

Frequently Asked Questions

Can I drive with this code?
It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.
Will this code clear itself?
Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.
How do I find the exact cause?
A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

What To Do Next

Possible Fixes

  • 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
  • 🔧 Test the relevant sensor(s) with a multimeter before replacing
  • 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

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

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P2100 Throttle Actuator A Control Motor Circuit/Open P2101 Throttle Actuator A Control Motor Circuit Range/Performance P2102 Throttle Actuator A Control Motor Circuit Low P2103 Throttle Actuator A Control Motor Circuit High P2104 Throttle Actuator Control System - Forced Idle P2105 Throttle Actuator Control System - Forced Engine Shutdown P2106 Throttle Actuator Control System - Forced Limited Power P2107 Throttle Actuator A Control Module Processor P2108 Throttle Actuator A Control Module Performance P2109 Throttle/Pedal Position Sensor A Minimum Stop Performance