OBD Code P0452

Evaporative Emission System Pressure Sensor/Switch Low

What’s mean?

OBD2 Code P0452 Definition:
The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.

Symptoms

Possible sumptoms of P0452
– Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

Possible causes of P0452
– The EVAP control system pressure sensor circuit is open or shorted – EVAP control system pressure sensor may be faulty The Error code is generally activated on detection of the following conditions: An excessively low voltage from the sensor is sent to ECM.

Possible Solutions

– Retight gas cap – Replaced EVAP Control System Pressure Sensor