What does code P2ADF mean?

Q: What does code P2ADF mean?

Intake Air System Leak Bank 2. P2ADF indicates that the engine computer has detected an intake air leak affecting bank 2 of the engine, meaning unmetered air is entering the intake tract after the mass airflow sensor on the bank 2 side. The computer typically recognizes this through fuel trim corrections that exceed a calibrated threshold, often combined with a lean oxygen sensor signal on that bank.

DTC codes / P2Axx · Hybrid propulsion / P2ADF

P2ADFIntake Air System Leak Bank 2

P2ADF indicates that the engine computer has detected an intake air leak affecting bank 2 of the engine, meaning unmetered air is entering the intake tract after the mass airflow sensor on the bank 2 side. The computer typically recognizes this through fuel trim corrections that exceed a calibrated threshold, often combined with a lean oxygen sensor signal on that bank.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

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