Powertrain
generic / SAE
P24B9
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / B9
Possible causes
- Sensor element drifted high
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–400 €
- Estimated time: 0.6–1.8 h
- Component: evap leak detection pump pressure sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012