Powertrain
generic / SAE
P2448
AIR System High Air Flow Bank 1
The secondary air injection system on bank 1 delivers more flow than calibrated when the pump is commanded on - typically a stuck-open switching valve allowing free flow.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 48
Possible causes
- AIR switching valve stuck open high
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 200–800 €
- Estimated time: 1–3 h
- Component: air system pump b1
- Component: air system switching valve b1
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012