Accelerator Pedal Position (APP) and Throttle Position (TP) Sensor Inputs

2010 Mercury Mariner Hybrid, AWDSECTION Accelerator Pedal Position (APP) and Throttle Position (TP) Sensor Inputs
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
APP SENSOR CHECK

DTCsa Description (Indicator Lamp)
P2122, P2123, P2127, P2128, P2132, P2133 APP sensor circuit continuity test (powertrain malfunction indicator [wrench], non-MIL).
P2121, P2126, P2131 APP range/performance (powertrain malfunction indicator [wrench], non-MIL).
P2138, P2140, P2139 APP to APP sensor correlation (powertrain malfunction indicator [wrench], non-MIL).

a Correlation and range/performance - sensor disagreement between processors (PCM and E-Quizzer). Monitor execution is continuous. Monitor false detection duration is less than 1 second to register a concern. For additional DTC information, refer toDIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .

TP SENSOR CHECK

DTCs a Description (Indicator Lamp)
P0122, P0123, P0222, P0223 TP circuit continuity test (MIL, powertrain malfunction indicator [wrench]).
P2135 TP to TP sensor correlation test (powertrain malfunction indicator [wrench], non-MIL).

a Correlation and range/performance - sensor disagreement between processors (PCM and E-Quizzer), TP inconsistent with TPPC throttle plate position. Monitor execution is continuous. Monitor false detection duration is less than 1 second to register a concern. For additional DTC information, refer toDIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.