Evaporative Emission Control System Control Valve
Table of contents
P1443 NISSAN Possible 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
How do I fix code P1443 NISSAN?
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’s pins.
Cost of diagnosing the P1443 NISSAN code
The cost of diagnosing the P1443 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1443 NISSAN Description
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.