P1189 FORD Possible Causes
- Faulty pump speed
- Pump speed harness is open or shorted
- Poor electrical connection in the pump speed circuit
How to Fix P1189 FORD Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service soon warning light)
P1189 FORD Meaning
The Powertrain Control Module (PCM) monitors the pump speed. The PCM sets the OBDII code when the pump speed does not meet factory specifications.