ShopBaseComplete shop management for auto repair shops · $249/mo
Try ShopBase →
Home/DTC Codes/Lincoln/MKX/2018-2018 3.7L V6/P2202
P2202

NOx Sensor Circuit Low Bank 1

2018-2018 Lincoln MKX 3.7L V6

Moderate SeverityPowertrainGeneric (SAE)

The 2018 Lincoln MKX is equipped with a 3.7L V6 engine. Below you'll find detailed p2202 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

NOx sensor bank 1 signal is below minimum expected voltage.

Symptoms

  • Check engine light
  • Incorrect DEF injection rate

Common Causes

  • Sensor short to ground
  • Wiring fault
  • Failed sensor

Diagnostic Steps

  1. Measure signal voltage
  2. Check wiring for shorts to ground

Repair Notes

Repair wiring or replace NOx sensor.

Related Codes

P2200NOx Sensor Circuit Bank 1P2203NOx Sensor Circuit High Bank 1

Other Powertrain Codes

P2202 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

2021-2021 3.0L Twin-Turbo V6

Lincoln Aviator

2021-2021 3.0L V6 Twin Turbo

Lincoln Aviator

2022-2022 3.0L Twin-Turbo V6

Common Questions

What does code P2202 mean on a 2018-2018 Lincoln MKX?

P2202 stands for "NOx Sensor Circuit Low Bank 1". NOx sensor bank 1 signal is below minimum expected voltage.

What are the symptoms of P2202 on a Lincoln MKX?

Common symptoms of P2202 include: Check engine light, Incorrect DEF injection rate.

What causes P2202 on a 2018-2018 Lincoln MKX?

Common causes of P2202 include: Sensor short to ground, Wiring fault, Failed sensor.

Last updated: March 2026

View Labor Times | View Torque Specs | View Fluid Specs