P027A Code: Meaning, Causes, and Symptoms | OBD2 Codes

P027A – Fuel Pump Module ‘B’ Control Circuit/Open


P027A Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


P027A Possible Causes


Faulty Fuel Pump Command (FPC),FPC Harness is open or shorted,FPC circuit poor electrical connection


P027A Description


The Powertrain Control Module (PCM) monitors the Fuel Pump Command (FPC) circuit for a concern. When the PCM commands the Fuel Pump (FP) ON, the PCM is able to detect a short to voltage on the FPC circuit. When the PCM commands the FP OFF, the PCM is able to detect an open circuit or a short to ground on the FPC circuit. The test fails if the voltage is less than or greater than a calibrated limit, for a calibrated amount of time.