P2203moderate severityPowertrain
NOx Sensor Circuit High Bank 1
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1