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TuningBot DTC Database · v4.37.15

P2379 O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEmissionsOBD2

What P2379 means

P2379
O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2 Generic · emissions Data confidence 65%

The control module detected that the O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2 value was outside the valid range.

Symptoms

  • MIL illuminated
  • Possible increased fuel consumption
  • Possible unstable idle

Possible causes

  • Aged or contaminated oxygen sensor
  • Sensor heater circuit fault
  • Wiring or connector fault
  • Exhaust leak near the sensor
  • Mixture fault upstream of the sensor

Recommended checks

  • Read live sensor voltage/current and heater status
  • Inspect wiring and connectors
  • Check for exhaust leaks near the sensor
  • Check fuel trim values for upstream mixture faults

Related and nearby codes

How to read P2379

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

379

Specific fault index within the subsystem.

Frequently asked questions about P2379

What does P2379 mean?

O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2. The control module detected that the O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2 value was outside the valid range.

Is P2379 generic or manufacturer-specific?

P2379 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2379 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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