Supply pressure
â–¶ How to fix
Check the circuit components, connectors and electrical cables. Check the overflow valve and the fuel return.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The feed pressure has been implausibly high in comparison with the nominal pressure for various operating conditions.
Possible cause
The fault is probably caused by a defective overflow valve. It may also be due to a clogged fuel return.