What does code P1198 mean?

Q: What does code P1198 mean?

Pump Rotor Control Underfueling. P1198 on Ford vehicles indicates that the powertrain control module has detected an underfueling condition specifically tied to the fuel pump rotor control circuit, meaning the pump is not delivering the commanded fuel volume or pressure. The computer monitors the pump's electrical feedback and compares it to expected values, and when the rotor control signal falls outside the acceptable range for too long, it logs this code and may illuminate the check engine light.

DTC codes / Ford codes / P1198

P1198 · FordPump Rotor Control Underfueling

P1198 on Ford vehicles indicates that the powertrain control module has detected an underfueling condition specifically tied to the fuel pump rotor control circuit, meaning the pump is not delivering the commanded fuel volume or pressure. The computer monitors the pump's electrical feedback and compares it to expected values, and when the rotor control signal falls outside the acceptable range for too long, it logs this code and may illuminate the check engine light.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

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