P2202moderate severityPowertrain
NOx Sensor Circuit Low Bank 1
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
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
- Measure signal voltage
- Check wiring for shorts to ground
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