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P2519 CHEVROLET

P2519 CHEVROLET - A/C Request 'A' Circuit

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Low refrigerant
  • Too much refrigerant
  • Faulty Low Side Pressure Sensor
  • Low Side Pressure Sensor harness is open or shorted
  • Low Side Pressure Sensor circuit poor electrical connection

Possible symptoms

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

P2519 Chevrolet Description

The Powertrain Control Module (PCM) monitors the refrigerant pressure through the Air Condition (A/C) Pressure Sensor. The PCM supplies a 5V reference and a low reference to the sensor. Changes in the A/C refrigerant pressure causes the sensor signal to the PCM to vary. When the pressure is high, the signal is high. When the pressure is low, the signal is low. The PCM sets the OBII code when the signal from the sensor is out of factory specifications.
OBDII Code P2519 Chevrolet - A/C Request 'A' Circuit - AutoCodes.com

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P2519 CHEVROLET Comments

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