Home/BMW/X5/BMW X5 E53 facelift (2003-2007)/Repair manual/Testing & Diagnostics/Diagnostic Trouble Codes with Test Charts (V8): Removal & I…
Contents Wiring diagrams Section: Testing & Diagnostics All sections

Diagnostic Trouble Codes with Test Charts (V8): Removal & Installation BMW X5 E53 facelift

Oxygen Removal After Fuel Cut-Off

During fuel cut-off the catalyst is filled to capacity with oxygen. If the amount of rich gas required to remove this oxygen exceeds a threshold, the catalyst is considered to be good.