Code Definition

P1220 — Fuel Pump Control Module (FPCM)

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Nissan

About P1220

P1220 is a manufacturer-specific powertrain diagnostic trouble code recorded for Nissan vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1220 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Fuel Pump Control Module (FPCM) varies the voltage supplied to the fuel pump to switch fuel delivery between two flow rates according to engine demand, working with a dropping resistor in the pump circuit. The Engine Control Module (ECM) monitors the voltage at a point between the fuel pump and the dropping resistor to confirm the FPCM is operating correctly. DTC P1220 is set when the ECM detects an improper voltage signal from the FPCM, indicating the module is not delivering the expected pump voltage. Common causes include a faulty FPCM, an open or shorted FPCM harness, a poor connection...

Join TaT to view the complete code information and diagnostic details.

Quick Facts