P240D
Alternative Fuel Low Pressure System Leak
Alternative Fuel Low Pressure System Leak: a leak has been detected in this brake-hydraulic circuit, which reduces braking pressure. Safety-critical.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Hose or fitting leakCommon
Parts involved
- Alternative Fuel Low Pressure Line
P240D is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.