NOx Sensor Circuit High Bank 1
2011-2011 Mitsubishi Lancer 2.0L I4
The 2011 Mitsubishi Lancer is equipped with a 2.0L inline-4 engine. Below you'll find detailed p2203 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
NOx sensor bank 1 signal is above maximum expected voltage.
Symptoms
- Check engine light
- Over-dosing DEF
Common Causes
- Open circuit
- Short to voltage
- Failed sensor module
Diagnostic Steps
- Measure signal voltage
- Check for open circuits
Repair Notes
Repair wiring or replace NOx sensor.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2203 on Other Vehicles
Mitsubishi 3000GT
1996-1996 3.0L V6 Twin Turbo
Mitsubishi 3000GT
1997-1997 3.0L V6 Twin Turbo
Mitsubishi 3000GT
1998-1998 3.0L V6 Twin Turbo
Mitsubishi 3000GT
1999-1999 3.0L V6 Twin Turbo
Mitsubishi Colt JP
2002-2002 1.3L I4 4A90
Mitsubishi Colt JP
2002-2002 1.5L I4 4A91
Mitsubishi Colt JP
2003-2003 1.3L I4 4A90
Mitsubishi Colt JP
2003-2003 1.5L I4 4A91
Common Questions
What does code P2203 mean on a 2011-2011 Mitsubishi Lancer?
P2203 stands for "NOx Sensor Circuit High Bank 1". NOx sensor bank 1 signal is above maximum expected voltage.
What are the symptoms of P2203 on a Mitsubishi Lancer?
Common symptoms of P2203 include: Check engine light, Over-dosing DEF.
What causes P2203 on a 2011-2011 Mitsubishi Lancer?
Common causes of P2203 include: Open circuit, Short to voltage, Failed sensor module.
Last updated: March 2026