P1219 – Fuel System Overtemperature
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Symptoms
- Hot restart problems
- Stalling when hot
- Hesitation
- Loss of power
- Check engine light
Causes
- Fuel overheated in rail
- Returnless system issue
- Restricted fuel lines
- Exhaust heat soak
- Faulty fuel temp sensor
Diagnosis
- Check fuel temperature data
- Inspect routing of lines
- Check heat shields
- Inspect return system
- Scan for related codes
Repair
- Improve heat shielding
- Reroute lines
- Replace fuel temp sensor
- Replace fuel pump
- Service fuel system