What Does P0467 Mean?
The purge flow sensor circuit is reading a voltage that is below the minimum expected value, indicating a short to ground, a failed sensor, or an abnormally low signal. On some vehicles, this code may indicate that the fuel cap is loose or missing, triggering an EVAP system fault. The ECM cannot properly monitor EVAP purge flow, compromising emissions control.
Common Causes
30%
Short to ground in the purge flow sensor signal circuit
30%
Failed purge flow sensor with shorted internal element
20%
Loose, missing, or damaged fuel cap (on vehicles using this code for cap detection)
12%
Corroded connector pins at the purge flow sensor
8%
ECM internal pull-up resistor failure on the sensor input
Diagnostic Steps
1
Check and tighten the fuel cap, clear the code, and drive for one complete drive cycle. If the code does not return, the fuel cap was the cause.
2
Disconnect the purge flow sensor and measure the voltage at the signal wire with the key on — it should read the reference voltage (typically 5V). A reading near 0V with the sensor disconnected indicates a wiring short to ground.
3
Measure the purge flow sensor output voltage with it connected. It should be above 0.5V at minimum. A reading below 0.2V confirms a low circuit condition.
4
Check the signal wire for shorts to ground by measuring resistance between the signal wire and chassis ground with the sensor and ECM disconnected. Should read OL (infinite).
5
Inspect the sensor connector for water intrusion, corroded pins, or green oxidation that could create a leakage path to ground.
Estimated Repair Cost
$20 - $350
Parts + labor, varies by vehicle and location
The purge flow sensor circuit is reading a voltage that is below the minimum expected value, indicating a short to ground, a failed sensor, or an abnormally low signal. On some vehicles, this code may indicate that the fuel cap is loose or missing, triggering an EVAP system fault. The ECM cannot pro...
The most common cause of P0467 (Evaporative Emission System Leak Detected (fuel cap loose/off) / Purge Flow Sensor Circuit Low Input) is: Short to ground in the purge flow sensor signal circuit
Typical repair costs for P0467 range from $20 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive. If caused by a loose fuel cap, simply tightening it resolves the issue. No drivability or safety concerns. Will cause an emissions test failure.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0467 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
EVAP / Emissions Control
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
