P0443 on Toyota Corolla E140: Evaporative Emission Control System Purge Control Valve Circuit Malfunction

Short answer: P0443 means “Evaporative Emission Control System Purge Control Valve Circuit Malfunction”. The car’s computer has found a fault in the Emissions system and turns on the Check engine light (MIL). First check: read the code and live data with an OBD-II scanner.

Standard OBD-II code Same meaning on all cars (SAE J2012). Not checked against this car’s factory manual.

Code

P0443

System

Emissions

Dashboard light

Check engine light (MIL)

Applies to

Generic OBD-II meaning. Not every code is used by this car.

Confidence

medium (generic OBD-II definition, not checked against the factory manual for this car)

Source

obd-codes.com

Symptoms and when it is set

1. Check engine light on

Likely causes

1. To cause a P0443, there has to be a problem with the purge control
2. CIRCUIT 3.
3. Not necessarily the valve. Usually they are a unit housing the valve and the
4. Solenoid as an assembly. Or it could be comprised of a separate solenoid with
5. Bad purge solenoid (internal short or open)
6. Wiring harness chafing or rubbing another component causing short or open

What to check, in order

1. Read the code and live data with an OBD-II scanner
2. Look for exhaust or vacuum leaks and check the wiring of the sensor or valve
3. Test the part before replacing it
4. Fix the cause, clear the code and test-drive

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

Same code on other cars

• P0443 · Toyota Passo (1st gen)
• P0443 · Toyota Corolla (11th gen, E170)
• P0443 · Honda City (5th gen, GM2)
• P0443 · Honda Civic (10th gen, FC)
• P0443 · Suzuki Wagon R (Pakistan, K10B)
• P0443 on all cars compared

← P0441 P0446 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.