Generic OBD-II / Powertrain

P0467 - The Purge Flow Sensor Is Reading Too Low

P0467 is a generic OBD-II code for a low-input purge flow sensor signal.

This is a generic OBD-II guide that can apply across many makes. Exact test flow, sensor locations, and repeat failure patterns can still vary by manufacturer and engine family.

Severity

Medium

Keep driving?

Usually short trips only

Most likely cause

A shorted sensor, wiring fault, or blocked purge path is usually the first place to look.

DIY friendly?

Basics first

First checks take 5 to 15 minutes for the first checks. No special tools are usually needed for the first checks.

Can you keep driving?

Can you keep driving?

Stop driving if any of these apply

  • !There is a strong fuel smell or an obvious fuel leak.
  • !The vehicle develops drivability symptoms that suggest more than a simple EVAP monitor fault.
If the light is steady and the vehicle still drives normally: Usually yes, because this is often an emissions-system issue rather than an immediate drivability fault.

What to check first

Step-by-step checks

  1. 1

    Safety first

    Work away from sparks and hot surfaces because the EVAP system handles fuel vapors

  2. 2

    Free - no tools

    Check whether the code appears with fuel smell, rough idle, or hard start after refueling

  3. 3

    Basic tool needed

    Inspect the purge sensor connector and harness for damage or corrosion

  4. 4

    Basic tool needed

    Look for vacuum hose routing problems or blocked purge passages

  5. 5

    Basic tool needed

    If scan data is available, compare commanded purge with the sensor response

  6. 6

    Basic tool needed

    Confirm whether the vehicle has a dedicated purge flow sensor before buying parts

If the code returns

  • -If the circuit is shorted, fix wiring before replacing the sensor.
  • -If the purge path is blocked or leaking, repair that first.
  • -If the valve is behaving normally but the signal stays low, the sensor moves higher on the list.

Background

What this code means

P0467 is a generic OBD-II code for a low-input purge flow sensor signal.

That usually means the ECU is seeing less purge flow than expected, or the circuit is being pulled low by a fault. A wiring issue, blocked purge path, or weak valve can all create the problem.

Diagnosis

Common causes

Most common

Shorted purge flow sensor circuit

A damaged wire or sensor can pull the signal lower than expected.

Common

Blocked purge passage

A restricted hose or passage can keep purge flow low.

Common

Weak purge valve

The valve may not open enough to let vapor flow.

Possible

Connector contamination

Corrosion or moisture can distort the sensor signal.

Avoid these mistakes

What not to do

  • xDo not replace the charcoal canister first if the purge flow circuit is the obvious issue.
  • xDo not ignore a blocked hose or routing problem around the purge system.

Parts

Parts that may need replacing

PartTypical costNotes
Purge flow sensor$40-$180Most relevant when the sensor itself is reading too low.
Purge valve or hose repair$20-$160Useful when the purge path is blocked or not opening properly.
Connector or wiring repair$20-$150Often the actual fix when the signal is being pulled low by damage or corrosion.

See also

Related OBD codes

Source notes

Generic OBD-II (SAE J1979 / ISO 15031-5). P0467 was seeded from dtcdb and then expanded around low-input purge flow sensor faults, including shorted circuits, blocked purge paths, and weak valves.

This guide is written as a generic multi-make reference, so bulletin history, sensor locations, and repair order can still change by manufacturer and engine family.

This is generic OBD-II guidance and should not override vehicle-specific service information. Exact diagnosis and repair steps vary by make, engine family, and model year.

Last reviewed: 2026-04-10

Reference: Open reference

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