Engine-Codes - Generic - P1443

P1443 Code - Evaporative Emission System Control Valve Low/No Flow

- Code Popularity: 39,813 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1443?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Loose fuel filler cap
  • Faulty EVAP Canister Purge Solenoid Valve
  • EVAP Canister Purge Solenoid Valve harness is open or shorted
  • EVAP Canister Purge Solenoid Valve circuit poor electrical connection
  • Blocked hose between the purge valve and FTP sensor
  • Faulty EVAP Fuel Tank Pressure (FTP) Sensor

Code Tech Notes

Check for blockages between the fuel tank, the EVAP Canister Purge Solenoid Valve, and the engine intake manifold. Check for obstructions in the EVAP Canister Purge Solenoid Valve diaphragm and ports.

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How to Fix the DTC P1443?

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 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 Code Mean?

The Powertrain Control Module (PCM) monitors the fuel tank pressure. The Diagnostic Trouble Code (DTC) will set when the PCM detects a fuel tank pressure change greater than minus (-) 7 inches of water in 30 seconds occurred with a purge, fuel vapor, flow at less than 0.02 lb/min (0.15 gm/s).

P1443 Code - Evaporative Emission System Control Valve Low/No Flow

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Code P1443 Information for Specific Makes

  • P1443 Audi EGR Valve Position Sensor Signal Too Low
  • P1443 BMW Leakage Diagnostic Pump Control Circuit Signal High
  • P1443 Ford Evaporative Emission System Control Valve Low/No Flow  
  • P1443 Hyundai EVAP System Tank Cap Missing
  • P1443 Infiniti Evaporative Emission Control System Control Valve
  • P1443 Jaguar EVAP Canister Purge Control System
  • P1443 Lexus Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2
  • P1443 Lincoln Evaporative Emission System Control Valve Low/No Flow
  • P1443 Mazda Evaporative Emission Control System Large leak detected
  • P1443 Mercedes-Benz Evaporative Emission Canister Purge Valve Malfunction
  • P1443 Mercury Evaporative Emission System Control Valve Low/No Flow
  • P1443 MINI Leakage Diagnostic Pump Control Circuit Signal High
  • P1443 Mitsubishi EVAP Purge Control Valve 2 Circuit Malfunction
  • P1443 Nissan Evaporative Emission Control System Control Valve
  • P1443 Saab Evaporative Emission Canister Purge Valve Malfunction
  • P1443 Subaru Evaporative Emission Control System Vent Control Function Problem  
  • P1443 Suzuki EVAP Purge Control Valve Malfunction- Stuck Open
  • P1443 Toyota Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2
  • P1443 Volkswagen EGR Valve Position Sensor Signal Too Low

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