EVAP System High Load Purge Line B Performance
The ECM detects insufficient flow or pressure in the high-load purge line B of the evaporative emissions system. Purge cannot be commanded effectively under high engine load.
Affected components
- Evap purge valve b
- Evap purge line b
- Intake manifold
Common causes
- High likelihood: Purge line B restricted or kinked
- Medium likelihood: Purge valve B partially open
Possible symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.