P1230 MERCURY Possible Causes
- Faulty low-speed fuel pump
- Low-speed fuel pump wiring harness is open or short-circuited
- Poor electrical connection in the low-speed fuel pump circuit
How to Fix P1230 MERCURY 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 warning light soon)
P1230 MERCURY Meaning
Low-speed fuel pump (LFP) circuit, the engine control module (ECM) detected excessive current in the circuit or voltage with the pump off