P2196moderate severityPowertrain
O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1)
on 2024 Dodge Hornet 1.3L Turbo I4 Hybrid · AWD
What this code means
The upstream oxygen sensor on bank 1 is reporting a constant rich signal that the PCM can't correct. This usually means a sensor or fuel mixture problem is skewing the air-fuel readings.
Symptoms
- Check engine light on
- Poor fuel economy
- Rough idle or hesitation
Common causes
- Faulty upstream O2 sensor
- Fuel injector leaking or stuck open
- High fuel pressure
- Contaminated or biased sensor wiring
Diagnostic steps
- Scan and record freeze frame data
- Check O2 sensor voltage with scan tool
- Inspect fuel pressure and injector operation
- Test sensor wiring and connectors for shorts
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1