P2203moderate severityPowertrain
NOx Sensor Circuit High Bank 1
on 2009 Dodge Sprinter 3.5L V6 · FWD
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.
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