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TuningBot DTC Database · v4.37.15

P2037 Reductant Injection Air Pressure Sensor A Circuit

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

P · PowertrainEmissionsOBD2

What P2037 means

P2037
Reductant Injection Air Pressure Sensor A Circuit Generic · emissions Data confidence 78%

The control module detected improper operation of the Reductant Injection Air Pressure Sensor A circuit.

Symptoms

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

Possible causes

  • Wiring
  • reductant injection air pressure 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 P2037

P

Powertrain: engine, transmission and driveline systems.

2

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

037

Specific fault index within the subsystem.

Frequently asked questions about P2037

What does P2037 mean?

Reductant Injection Air Pressure Sensor A Circuit. The control module detected improper operation of the Reductant Injection Air Pressure Sensor A circuit.

Is P2037 generic or manufacturer-specific?

P2037 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2037 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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