Engine-Codes - Generic - P0450

P0450 Code - Evaporative Emission Control System Pressure Sensor Malfunction

- Code Popularity: 51,514 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0450?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Evaporative Emission System (EVAP) Pressure sensor
  • Evaporative Emission System Pressure sensor harness is open or shorted
  • Evaporative Emission System Pressure sensor circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

Code Tech Notes





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How to Fix the DTC P0450?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0450 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P0450 Code Mean?

The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. The sensor output voltage to the Powertrain Control Module (PCM) increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for onboard diagnosis. The Diagnostic Trouble Code (DTC) will set when an improper voltage signal from the EVAP control system pressure sensor is sent to the Powertrain Control Module.

P0450 Code - Evaporative Emission Control System Pressure Sensor Malfunction

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Code P0450 Information for Specific Makes

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