OBD-II code · Powertrain (generic, extended)
P24BD EVAP System Leak Detection Pump Switching Valve Control Circuit Open
The switching valve in the LDP - directs pump output between EVAP test path and reference orifice - has an open control circuit.
Is it safe to drive with P24BD?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in valve or wiring
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
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
- P24BAEVAP System Leak Detection Pump Pressure Sensor Circuit Low
- P24BBEVAP System Leak Detection Pump Pressure Sensor Circuit High
- P24BCEVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent
- 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
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.