NOx Sensor Circuit Range/Performance Bank 1
2005-2005 Mitsubishi Eclipse 2.4L I4
The 2005 Mitsubishi Eclipse is equipped with a 2.4L inline-4 engine. Below you'll find detailed p2201 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
NOx sensor on bank 1 is responding but values are outside expected range.
Symptoms
- Check engine light
- Poor emissions performance
- Possible SCR fault codes
Common Causes
- Degraded NOx sensor
- Exhaust leak near sensor
- Contaminated sensor element
Diagnostic Steps
- Compare actual NOx levels to expected at various loads
- Check for exhaust leaks
- Inspect sensor condition
Repair Notes
Replace NOx sensor if out of specification after leak check.
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
P2201 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 P2201 mean on a 2005-2005 Mitsubishi Eclipse?
P2201 stands for "NOx Sensor Circuit Range/Performance Bank 1". NOx sensor on bank 1 is responding but values are outside expected range.
What are the symptoms of P2201 on a Mitsubishi Eclipse?
Common symptoms of P2201 include: Check engine light, Poor emissions performance, Possible SCR fault codes.
What causes P2201 on a 2005-2005 Mitsubishi Eclipse?
Common causes of P2201 include: Degraded NOx sensor, Exhaust leak near sensor, Contaminated sensor element.
Last updated: March 2026