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TuningBot DTC Database · v4.37.14

P014C O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1

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

P · PowertrainEmissionsOBD2

What P014C means

P014C
O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1 Generic · emissions Data confidence 85%

The control module detected that the O2 Sensor Slow Response responded more slowly than expected.

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

P01 range
P0100P0101P0102P0103P0104P0105P0106P0107P0108P0109P010AP010BP010CP010DP010EP010FP0110P0111

How to read P014C

P

Powertrain: engine, transmission and driveline systems.

0

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

14C

Specific fault index within the subsystem.

Frequently asked questions about P014C

What does P014C mean?

O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1. The control module detected that the O2 Sensor Slow Response responded more slowly than expected.

Is P014C generic or manufacturer-specific?

P014C is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P014C at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

Stage 1/2/3 TuningDPF RemovalEGR RemovalAdBlue / SCR RemovalDTC RemovalIMMO OFFSpeed Limiter (Vmax)

Understand the system behind this code: Oxygen Sensors (Lambda)

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

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