P2138 — Throttle / pedal position sensor D/E voltage correlation.

Code P2138 is a standard OBD-II diagnostic trouble code: Throttle / pedal position sensor D/E voltage correlation.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P2138 across 84 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P2138 84 patterns · top 60

2021 GMC Acadia

steering — Accelerator Pedal and Terminal Connector Damage

2018 Buick Encore

engine — Accelerator pedal position sensor failure

2018 Chevrolet Malibu

powertrain — Engine Power Reduced / Loss of Power on Acceleration

2018 Chevrolet Malibu

cruise control — Reduced Engine Power limp-mode activation

2018 Chevrolet Equinox

electrical — Accelerator Pedal Position Sensor Intermittent Failure

2018 Mercedes-Benz GLC-Class

engine — Throttle Position/Pedal Sensor Failure

2017 Chevrolet Malibu

cruise control — Accelerator Pedal Position Sensor Failure – Reduced Engine Power Mode

2017 Chevrolet Malibu

electrical — Reduced/Loss of Engine Power and Stalling

2017 Chevrolet Malibu

engine — Engine Power Reduced / Limp Mode

2017 Chevrolet Malibu

powertrain — Sudden power loss / reduced engine power in motion

2017 Chevrolet Tahoe

electrical — Roof antenna water leak causing fuse box rust and electrical failures

2017 Chevrolet Equinox

electrical — Starting failures and battery drain

2017 GMC Acadia

electrical — Throttle Control and Propulsion Power Loss

2016 Chevrolet Malibu

electrical — Engine Power Reduction / Limp Mode

2016 Chevrolet Malibu

cruise control — Engine Power Reduced / Limp Mode Triggered by Accelerator Pedal / Throttle Sensor Fault

2016 Chevrolet Malibu

brakes — Brake Booster / Vacuum Pump Failure

2016 Chevrolet Malibu

powertrain — Engine Power Reduced / Reduced Engine Power Warning

2016 Chevrolet Malibu

engine — Reduced Engine Power / Limp Mode Activation (Sensor-Related)

2016 Chevrolet Traverse

powertrain — Traction control and Stabilitrak malfunction with loss of acceleration and reduced engine power

2016 Chevrolet Colorado

electrical — Water Intrusion / Weather-Related Electrical Shorts

2016 Chevrolet Traverse

electrical — Stabilitrak and Traction Control System Fault with Engine Derate

2016 Honda Accord

powertrain — Hesitation on acceleration (non-CVT models)

2016 Jeep Renegade

cruise control — Throttle/Pedal Position Sensor Failure (Electronic Throttle Control)

2016 Jeep Patriot

cruise control — Electronic Throttle Control (ETC) Failure – Loss of Acceleration

2015 Honda CR-V

electrical — Starter Failure / Intermittent Starting

2015 Subaru Forester

cruise control — Unintended acceleration during low-speed maneuvering

2014 Chevrolet Malibu

powertrain — Reduced engine power / limp mode in motion

2014 Chevrolet Sonic

electrical — Intermittent engine stall with electrical shutdown

2014 Chevrolet Silverado

cruise control — Unintended Full-Throttle Acceleration / Accelerator Pedal Malfunction

2013 Chevrolet Sonic

electrical — Code 84 power reduction with moisture intrusion—rain-related failure

2013 Chevrolet Traverse

engine — Engine stalling and loss of power

2013 Subaru Impreza

cruise control — Unintended acceleration

2012 Buick Enclave

engine — Engine power loss and traction control faults

2012 Chevrolet Sonic

electrical — Fuel delivery and air intake system failures

2012 Chevrolet Camaro

electrical — Engine stalling and loss of power

2012 Chevrolet Silverado

electrical — Engine Power Reduction and Traction/StabiliTrac Disabled

2012 Chevrolet Silverado

powertrain — Check Engine light and reduced engine power with throttle/accelerator sensor codes

2012 Dodge Grand Caravan

cruise control — Unintended Acceleration—Vehicle Accelerates on Its Own

2012 Ford Fiesta

electrical — Stalling/Engine Shutdown While Driving

2012 GMC Acadia

electrical — Stability Control / Traction Control Failure with Power Loss

2011 Chevrolet Impala

powertrain — Reduced engine power and stalling at speed

2011 Chevrolet Impala

electrical — Stabilitrak/traction control malfunction with reduced engine power and stall

2011 Chevrolet Malibu

engine — Sudden Loss of Engine Power with 'Reduced Engine Power' Warning

2011 Chevrolet Equinox

electrical — Engine stalling and loss of power while driving

2011 Chevrolet Camaro

electrical — Drive-by-Wire Throttle Control System (P2138 / Throttle Position Sensor)

2011 Subaru Forester

cruise control — Unintended Acceleration During Braking and Parking

2010 Buick LaCrosse

electrical — Intermittent engine shutdown and stalling

2010 Chevrolet Impala

powertrain — Loss of engine power with service stabilitrak and traction control warnings

2010 Chevrolet Silverado

powertrain — Unintended acceleration and throttle sensor faults

2009 Buick LaCrosse

electrical — Reduced engine power and traction control warnings

2009 Chevrolet Impala

powertrain — Sudden loss of engine power / limp mode with reduced power warning

2009 Chevrolet Silverado

electrical — Intermittent electrical system reset / power loss while driving

2009 Chevrolet Impala

engine — Sudden Loss of Engine Power / Limp Mode with Warning Lights

2009 Chevrolet Impala

cruise control — Accelerator Pedal Position Sensor / Throttle Body Failure

2009 Chevrolet Tahoe

powertrain — Reduced Engine Power / Electrical Control Failure

2008 Chevrolet Impala

cruise control — Reduced Engine Power / Acceleration Limp Mode

2008 Chevrolet Impala

electrical — Engine Power Reduced / Throttle System Limp Mode

2008 Chevrolet Impala

powertrain — Reduced Engine Power / Throttle Control Failure

2008 GMC Yukon

powertrain — Throttle position sensor / engine power reduced codes

2008 Kia Sorento

electrical — Sudden Power Loss with Check Engine and ESC OFF Lights

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →