What does code P1230 mean?

Q: What does code P1230 mean?

Fuel Pump Control Unit Malfunction. P1230 on a Subaru means the engine control module (ECM) has detected a fault in the fuel pump control unit, which is the module that varies voltage to the fuel pump for quieter, cooler operation. The ECM monitors the control circuit and pump feedback, and when the signal does not match commanded values, it stores this code and typically illuminates the check engine light.

DTC codes / Subaru codes / P1230

P1230 · SubaruFuel Pump Control Unit Malfunction

P1230 on a Subaru means the engine control module (ECM) has detected a fault in the fuel pump control unit, which is the module that varies voltage to the fuel pump for quieter, cooler operation. The ECM monitors the control circuit and pump feedback, and when the signal does not match commanded values, it stores this code and typically illuminates the check engine light.

SystemPowertrain

Code typeSubaru specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

Guidance is general and written for Subaru vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.