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Home/DTC Codes/Lincoln/MKX/2014-2014 3.7L V6/P2104
P2104

Throttle Actuator Control System Forced Idle

2014-2014 Lincoln MKX 3.7L V6

Critical SeverityPowertrainGeneric (SAE)

The 2014 Lincoln MKX is equipped with a 3.7L V6 engine. Below you'll find detailed p2104 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

ECM has forced the engine to idle speed only due to a detected throttle control fault.

Symptoms

  • Engine stuck at idle
  • Check engine light
  • Vehicle barely moves
  • Traction control light on

Common Causes

  • Throttle body failure
  • APP sensor fault
  • Wiring issue
  • ECM detected conflicting throttle signals

Diagnostic Steps

  1. Scan for other DTCs
  2. Check APP sensor signals
  3. Inspect throttle body
  4. Clear codes and test

Repair Notes

Diagnose root cause from accompanying DTCs. This is a protective measure.

Related Codes

P2100Throttle Actuator Control Motor Circuit OpenP2135Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation

Other Powertrain Codes

P2104 on Other Vehicles

Lincoln Aviator

2003-2003 4.6L V8 DOHC

Lincoln Aviator

2004-2004 4.6L V8 DOHC

Lincoln Aviator

2005-2005 4.6L V8 DOHC

Lincoln Aviator

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 P2104 mean on a 2014-2014 Lincoln MKX?

P2104 stands for "Throttle Actuator Control System Forced Idle". ECM has forced the engine to idle speed only due to a detected throttle control fault.

What are the symptoms of P2104 on a Lincoln MKX?

Common symptoms of P2104 include: Engine stuck at idle, Check engine light, Vehicle barely moves, Traction control light on.

What causes P2104 on a 2014-2014 Lincoln MKX?

Common causes of P2104 include: Throttle body failure, APP sensor fault, Wiring issue, ECM detected conflicting throttle signals.

Last updated: March 2026

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