Error code

OBD2 P2037

OBD2P2037
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Reductant Injection Air Pressure Sensor Circuit.

Severity

moderateCan drive but may experience reduced performance and increased emissions.

Summary

P2037 indicates a malfunction in the reductant injection air pressure sensor circuit or the sensor itself, which is part of the exhaust gas treatment system used to reduce harmful emissions.

Symptoms

  • Check engine light may illuminate
  • No specific drivability symptoms

Common Causes

  • Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors
  • Defective reductant injection air pressure sensor
  • Defective air compressor/pump
  • In rare cases, a failure of the reductant dosing unit

Diagnosis

  1. Inspect wiring and connectors for damage or corrosion.
  2. Check air compressor/pump functionality.
  3. Test reductant injection air pressure sensor.
  4. Consider replacing faulty components if identified.

Fixes

  • Replace damaged wiring/connectors, defective sensor, or malfunctioning air pump/compressor as needed.

FAQ

What does P2037 mean?

P2037 indicates a problem with the reductant injection air pressure sensor circuit or the sensor itself.

How serious is P2037?

Moderately serious; it affects emissions control but may not cause immediate drivability issues.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

More OBD2 codes

All OBD2 codes →Search more codes →