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Home/DTC Codes/Lincoln/MKX/2014-2014 3.7L V6/P0122
P0122

Throttle/Pedal Position Sensor/Switch A Circuit Low Input

2014-2014 Lincoln MKX 3.7L V6

High SeverityPowertrainGeneric (SAE)

The 2014 Lincoln MKX is equipped with a 3.7L V6 engine. Below you'll find detailed p0122 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

The TPS voltage is below the minimum threshold.

Symptoms

  • Check Engine Light
  • Limp mode
  • Engine stuck at idle
  • No throttle response

Common Causes

  • Short to ground in TPS circuit
  • Faulty TPS
  • Damaged wiring
  • Failed reference voltage

Diagnostic Steps

  1. Test TPS voltage
  2. Check for shorts to ground
  3. Test 5V reference
  4. Inspect wiring

Repair Notes

Repair short or replace TPS.

Related Codes

P0120Throttle/Pedal Position Sensor/Switch A CircuitP0123Throttle/Pedal Position Sensor/Switch A Circuit High Input

Other Powertrain Codes

P0122 on Other Vehicles

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2020-2020 3.0L Twin-Turbo V6

Lincoln Aviator

2020-2020 3.0L V6 Twin Turbo

Lincoln Aviator

2020-2020 3.0L V6 Twin Turbo Hybrid

Lincoln Aviator

2021-2021 3.0L Twin-Turbo V6

Lincoln Aviator

2021-2021 3.0L V6 Twin Turbo

Common Questions

What does code P0122 mean on a 2014-2014 Lincoln MKX?

P0122 stands for "Throttle/Pedal Position Sensor/Switch A Circuit Low Input". The TPS voltage is below the minimum threshold.

What are the symptoms of P0122 on a Lincoln MKX?

Common symptoms of P0122 include: Check Engine Light, Limp mode, Engine stuck at idle, No throttle response.

What causes P0122 on a 2014-2014 Lincoln MKX?

Common causes of P0122 include: Short to ground in TPS circuit, Faulty TPS, Damaged wiring, Failed reference voltage.

Last updated: March 2026

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