What does code P2448 mean?

Q: What does code P2448 mean?

AIR System High Air Flow Bank 1. P2448 means the powertrain control module has detected that the secondary air injection system is flowing more air than expected on bank 1 of the engine. The computer commands the air pump on during cold starts and watches the upstream oxygen sensor response, and it sets this code when the sensor reports a leaner mixture than the commanded air flow should produce.

DTC codes / P24xx · Auxiliary emission controls / P2448

P2448AIR System High Air Flow Bank 1

P2448 means the powertrain control module has detected that the secondary air injection system is flowing more air than expected on bank 1 of the engine. The computer commands the air pump on during cold starts and watches the upstream oxygen sensor response, and it sets this code when the sensor reports a leaner mixture than the commanded air flow should produce.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaAuxiliary emission controls

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