XC90 Check Engine - OBD2 Code P0101, P2177

Aleco74 · Post by **Aleco74** » 04 Dec 2008, 08:52

Hi
My check engine light went on last week. I connected my OBD2 scanner and got these two codes: P0101 and P2177, does anybode know what needs to be done to fix the problem^
Thanks,

Post by **billofdurham** » 04 Dec 2008, 11:23

Welcome to Matthew's Volvo Site.

Which year and engine?

Bill.

Aleco74 · Post by **Aleco74** » 04 Dec 2008, 11:47

Sorry... I have a Volvo XC90 2005, 2.5T AWD with 80,000 miles

Post by **billofdurham** » 04 Dec 2008, 12:32

P0101, Volvo code ECM130A, is an intake air leakage, faulty signal.

Check the hoses and hose connectors between the Mass Air Flow meter and the throttle unit are not leaking nor defective. Check that the boost pressure sensor is correctly mounted and check for air leaks around the component. This DTC may be set by a blocked crankcase ventilation or PCV nipple or a damaged MAF sensor.

P2177, Volvo code ECM261A can also be an intake air leak. It may also be an exhaust system air leak, low fuel pressure, or a defective heated oxygen sensor.

Bill.

Aleco74 · Post by **Aleco74** » 04 Dec 2008, 12:57

Thanks Bill!