P2038 - Reductant Injection Air Pressure Sensor 'A' Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Reductant Injection Air Pressure Sensor
  • Reductant Injection Air Pressure Sensor harness is open or shorted
  • Reductant Injection Air Pressure Sensor circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2038 Description

The Reductant Injection Air Pressure Sensor sends voltage reading information to the Powertrain Control Module (PCM). The PCM interprets these readings as pressure or exhaust gas temperature. The code is set when the voltage sent from the sensor to the PCM is out of factory specifications.
OBDII Code P2038 - Reductant Injection Air Pressure Sensor 'A' Circuit Range/Performance - AutoCodes.com

P2038 Information for specific makes

  • P2038 CHEVROLET Reductant Injection Air Pressure Sensor 'A' Circuit Range/Performance
  • P2038 DODGE Reductant Injection Air Pressure Sensor 'A' Circuit Range/Performance
  • P2038 FORD Reductant Injection Air Pressure Sensor 'A' Circuit Range/Performance
  • P2038 GMC Reductant Injection Air Pressure Sensor 'A' Circuit Range/Performance
  • P2038 MERCEDES-BENZ Reductant Injection Air Pressure Sensor 'A' Circuit Range/Performance

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