P1243 MERCURY Possible Causes
- Faulty secondary fuel pump
- Secondary fuel pump circuit open or shorted
- Poor electrical connection in secondary fuel pump circuit
How is code P1243 MERCURY repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1243 MERCURY Meaning
Secondary fuel pump faulty or ground fault is the generic description for Mercury P1243 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the Mercury P1243 OBDII code.