P0444

EVAP System Purge Control Valve "A" Circuit Open

Car Fault Codes Emissions & exhaust

Can you still drive? Yes, normally

Who can fix it? DIY with some experience

Typical repair time 20 minutes – 1.5 hours

Typical cost SAR 100 to 500

What it means

The engine computer has detected that the purge valve circuit is open, meaning current cannot flow because of a break in a wire, a connector or the valve coil itself. The valve then usually stays closed and fuel vapor is not drawn from the charcoal canister.

Symptoms4

Check engine light on.
Usually no driving symptoms.
Occasional light fuel smell from a saturated charcoal canister.
Failed emissions test.

Possible causes5

Disconnected or loose purge valve connector.
Open internal valve coil.
Broken wire in the supply or control circuit.
Blown fuse feeding the valve on some vehicles.
Terminals corroded by moisture.

How to diagnose5

Make sure the connector is fully seated and its terminals are sound.
Measure the valve coil resistance; an infinite reading means the coil is open.
Check for voltage at the connector with the ignition on.
Check continuity of the control wire between the valve and the computer.
Check the circuit fuse.

How to fix5

Reconnect the connector or clean its terminals.
Repair the broken wire.
Replace the blown fuse after finding the cause.
Replace the purge valve if its coil is open.
Clear the codes and confirm the valve works with a scan tool.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is small for a disconnected connector or broken wire, and a little higher when the purge valve is replaced.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

What does an open circuit mean?

It means current cannot complete its path between the computer and the valve because of a broken wire, a disconnected connector or a failed coil.

Can I fix it myself?

If the connector is loose or the valve is easy to reach, yes, with basic tools. Tracing a broken wire usually needs a technician.

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This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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