OBD-II code · Powertrain (generic, extended)
P24C1 EVAP System Leak Detection Pump Switching Valve Performance Stuck Off
Same as P24C0 with the valve stuck off. 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.
Is it safe to drive with P24C1?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyValve stuck off
- Less likelyCarbon or debris buildup preventing free movement
- Less likelyComponent wear with age - mechanical play
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–1.8 h
- Emissions test
- Likely to fail
- Parts involved
- Evap Leak Detection Pump Switching Valve
Related codes
- P24BEEVAP System Leak Detection Pump Switching Valve Control Circuit Low
- P24BFEVAP System Leak Detection Pump Switching Valve Control Circuit High
- P24C0EVAP System Leak Detection Pump Switching Valve Stuck On
- P24C2Exhaust Gas Temperature Measurement System Multiple Sensor Correlation Bank 1
- P24C3Exhaust Gas Temperature Measurement System Multiple Sensor Correlation Bank 2
- P24C4EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.