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TuningBot DTC Database · v4.37.15

P2202 NOx Sensor Circuit Low Bank 1 Sensor 1

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

P · PowertrainEmissionsOBD2

What P2202 means

P2202
NOx Sensor Circuit Low Bank 1 Sensor 1 Generic · emissions Data confidence 85%

The control module detected that the signal in the NOx circuit stayed below the expected operating range.

Symptoms

  • MIL or SCR/AdBlue warning illuminated
  • Possible start-count-down or torque limitation on some applications

Possible causes

  • Wiring short to ground
  • NOx sensor

Recommended checks

  • Read NOx sensor values and dosing system status
  • Check reductant level and quality data
  • Inspect dosing valve, lines and heater operation
  • Check wiring and connectors of the SCR components
  • Check for OEM technical bulletins and software updates

Related and nearby codes

How to read P2202

P

Powertrain: engine, transmission and driveline systems.

2

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

202

Specific fault index within the subsystem.

Frequently asked questions about P2202

What does P2202 mean?

NOx Sensor Circuit Low Bank 1 Sensor 1. The control module detected that the signal in the NOx circuit stayed below the expected operating range.

Is P2202 generic or manufacturer-specific?

P2202 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2202 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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