P0240 anybody had this issue?

tibi9999 · Post by **tibi9999** » 20 Jul 2011, 15:18

P0240 showed up on my reader but no engine light on. It's strange and it's a bit annoying.
V70
2005
T5

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tibi9999 · Post by **tibi9999** » 30 Jul 2011, 01:21

I looked into that deeper and first it sound like the MAP sensor but most likely the turbo boost line leaking somewhere so I gonna try a leak test.
By the way anybody know what's the oem boost pressure should be?
I tried with obd2 and shows max 9.2 psi.

Post by **JRL** » 30 Jul 2011, 05:14

Not sure on an 05 but a LOT more than that, in the low 'teens

tibi9999 · Post by **tibi9999** » 14 Aug 2011, 02:50

The code refers to the turbo boost pressure circuit range /performance. So ether the pressure sensor failing or the hoses leaking somewhere. I did a leak test on the turbo boost line and discovered a leak which I didn't expect. Now the pressure is a lot better than before. Only one thing I wondering on. The code need to be cleared by CPU after N fault free cycles. How long that can take?

Post by **jimmy57** » 14 Aug 2011, 09:07

For engine management faults the code clear is typically 40 warm up cycles after the MIL is turned off. That is the process on North American models, I have no idea if that is true for Euro markets. If it is a "pre-set" code where the fault has not occurred on consecutive key on cycles and has not yet turned on the MIL then it will self clear sooner but I don't recall the warm up cycles in that case.

tibi9999 · Post by **tibi9999** » 19 Aug 2011, 06:29

The code is still there so I replacing the turbo boost pressure sensor today. Let you know later if is resolved.

tibi9999 · Post by **tibi9999** » 19 Aug 2011, 10:12

I have done the sensor replacement and bingo!!! I went for a spin and the pressure on the gauge showed up to 0.8 bar which is about right for v70 T5.