P0443 on Toyota 4Runner
Factory diagnostic protocol and troubleshooting wire for fault code P0443 specifically for the Toyota 4Runner (2020–2026, 4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl).
1. Symptoms of P0443 on Toyota 4Runner
When the Engine Control Module (ECM/PCM) on your Toyota 4Runner (4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl) logs fault code P0443, drivers commonly observe:
2. Most Likely Causes on Toyota 4Runner
Historical warranty claims and technical repair bulletins for Toyota 4Runner point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Toyota 4Runner
Find the purge valve mounted on the intake manifold with one vacuum line leading to the intake and one to the charcoal canister. on the Toyota 4Runner equipped with 4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl.
Unplug 2-pin connector and measure resistance across terminals with multimeter. Typical spec is 14–30 ohms. If open (OL) or shorted (0 ohms), solenoid is dead. on the Toyota 4Runner equipped with 4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl.
Remove purge valve and blow into it. A healthy de-energized purge valve should be 100% sealed. If air passes through, the internal seal is stuck open. on the Toyota 4Runner equipped with 4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl.
Disconnect quick-release vapor lines, unbolt mounting bracket, snap new OEM purge valve into place, and reconnect electrical plug. on the Toyota 4Runner equipped with 4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl.
Clear DTCs with scanner and verify EVAP monitor completes. on the Toyota 4Runner equipped with 4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl.
Equipment for Diagnosing Toyota 4Runner (P0443)
OEM Tethered Fuel Gas Cap with O-Ring
Tight-sealing factory fuel cap resolves common EVAP small/large leak codes without workshop visits.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on Toyota 4Runner
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Toyota 4Runner:
4. Toyota 4Runner P0443 FAQs
What causes code P0443 to trigger on a Toyota 4Runner?
On the Toyota 4Runner (4.0L V6 (1GR-FE) / 2.4L i-FORCE Turbo 4-Cyl), P0443 is most frequently caused by Failed EVAP purge solenoid coil (open or shorted internally) or Broken or frayed wiring harness to purge valve connector.
Where is the OBD-II port located on my Toyota 4Runner?
On the Toyota 4Runner, the 16-pin DLC diagnostic connector is located Lower dashboard near parking brake mechanism. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Toyota 4Runner with code P0443?
Yes. Safe to drive, but engine may experience hard starting after refueling at gas station. Given that P0443 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.