What does code P28F8 mean?

Q: What does code P28F8 mean?

Exhaust Pressure Too High Bank 2. P28F8 means the powertrain control module has detected that exhaust pressure on bank 2 is higher than the expected range for the current operating conditions. The computer compares the bank 2 exhaust pressure sensor signal against a modeled value and sets this code when the measured pressure stays too high, which points to a restriction or a sensor reporting error on that bank.

DTC codes / P28xx · Transmission / P28F8

P28F8Exhaust Pressure Too High Bank 2

P28F8 means the powertrain control module has detected that exhaust pressure on bank 2 is higher than the expected range for the current operating conditions. The computer compares the bank 2 exhaust pressure sensor signal against a modeled value and sets this code when the measured pressure stays too high, which points to a restriction or a sensor reporting error on that bank.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaTransmission

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