Ευρετήριο κωδικών βλάβης · low
P1664
Injection pump control module malfunction
Injection pump control module malfunction
Scope: 2.0D · System(s): EMS/diesel
Common causes
- Injection-pump electronics/module
- pump failure
- wiring/power supply
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Compare live sensor values vs expected (unplugged/biased sensors are common)
Typical fixes
- Check pump power/grounds/wiring and related fuel-pressure faults
- specialist pump/module testing or replacement may be required.