What does code P2635 mean?

Q: What does code P2635 mean?

Fuel Pump 'A' Low Flow / Performance. P2635 means the powertrain control module (PCM) has detected that the fuel pump 'A' circuit is not delivering the expected flow or performance, based on feedback from the fuel pressure sensor or fuel pump control module. The computer commands a certain fuel pump duty cycle or pressure and sees the actual result fall outside the acceptable range, indicating a low-flow or performance fault.

DTC codes / P26xx · Computer and output circuits / P2635

P2635Fuel Pump 'A' Low Flow / Performance

P2635 means the powertrain control module (PCM) has detected that the fuel pump 'A' circuit is not delivering the expected flow or performance, based on feedback from the fuel pressure sensor or fuel pump control module. The computer commands a certain fuel pump duty cycle or pressure and sees the actual result fall outside the acceptable range, indicating a low-flow or performance fault.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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