What it means
The EVAP tank vapor line is restricted or blocked, limiting vapor flow through that line.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The EVAP tank vapor line carries fuel vapor from the tank through the emissions-control plumbing. This code indicates that vapor flow through that line is restricted or blocked, which can happen if the line is kinked, contaminated, or obstructed at a connection.
Common causes
Most likely first.
- Crushed or kinked tank vapor line
- Vapor line blocked by debris or contamination
- Restricted connection at the tank or EVAP plumbing
Symptoms
- Check engine light on
How to diagnose it
- Record freeze-frame data and check for related EVAP codes that may help locate the restricted tank vapor path.
- Inspect the tank vapor line along its accessible route for crushing, kinks, pinching, or damage.
- Check accessible EVAP connections at the tank and plumbing for a blocked or poorly seated connection.
- Following the manufacturer's service procedure, test vapor flow through the tank line to confirm where the restriction is.
- If the line is clear, inspect connected EVAP plumbing for contamination or a restriction that affects flow through the tank vapor circuit.
Common fixes
- Reposition a kinked or pinched tank vapor line.
- Replace a crushed or damaged section of vapor line.
- Clear contamination from a restricted connection or line using the manufacturer's service procedure.
- Repair or replace a blocked EVAP connection identified during flow testing.
Can I keep driving?
This fault commonly turns on the check-engine light and affects the emissions-control system, while the code alone does not indicate an immediate drivability problem. Have the restriction repaired soon; if you smell fuel, stop driving and address the leak or vapor problem promptly.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.