What does code P1649 mean?

Q: What does code P1649 mean?

Fuel Injection Pump Module. P1649 on Mazda vehicles indicates that the fuel injection pump module has reported a fault to the engine control module (ECM), typically an internal electrical or communication failure within the pump control circuit. The ECM sets this code when it detects an out-of-range signal or loss of expected feedback from the injection pump module, which can affect fuel delivery and engine performance.

DTC codes / Mazda codes / P1649

P1649 · MazdaFuel Injection Pump Module

P1649 on Mazda vehicles indicates that the fuel injection pump module has reported a fault to the engine control module (ECM), typically an internal electrical or communication failure within the pump control circuit. The ECM sets this code when it detects an out-of-range signal or loss of expected feedback from the injection pump module, which can affect fuel delivery and engine performance.

SystemPowertrain

Code typeMazda specific

SeverityHigh

Fix difficultyProfessional

AreaComputer and output circuits

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