Engine-Codes - Infiniti - P1443 Infiniti

P1443 Infiniti Code - Evaporative Emission Control System Control Valve

- Code Popularity: 4,367 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1443 Infiniti?

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 Throttle Position Sensor
  • Faulty Engine Coolant Temperature Sensor
  • Faulty EVAP Canister Purge Control Solenoid Valve
  • EVAP Canister Purge Control Solenoid Valve harness is open or shorted
  • EVAP Canister Purge Control Solenoid Valve circuit poor electrical connection
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How to Fix the DTC P1443 Infiniti?

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 P1443 Infiniti 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 P1443 Infiniti Code Mean?

The canister control vacuum check switch is installed in the vacuum line between EVAP canister purge control solenoid valve and EVAP canister purge control valve (built into EVAP canister). The switch detects vacuum signal to the EVAP canister purge control valve and send an "ON" or "OFF" signal to the ECM. When no vacuum is supplied to the valve, the canister control vacuum check switch sends and "ON" signal to the ECM. When vacuum is supplied to the valve, canister control vacuum check switch sends "OFF" signal to the ECM.
The canister control vacuum check switch is not used to control the engine system. It is used only for on board diagnosis.
P1443 Infiniti Code - Evaporative Emission Control System Control Valve

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