EVAP System Leak Detection Pump Pressure Sensor Circuit Range or Performance
Same as P24B8 with the signal in plausible range yet not matching the pump operating curve. The evaporative system captures fuel vapor from the tank and purges it into intake; leaks or stuck purge valves leak hydrocarbons and cause emissions failures.
Affected components
- Evap leak detection pump pressure sensor
Common causes
- High likelihood: Sensor element drifted
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
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.