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Check engine message

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Old Sep 13th, 2017, 18:05   #1
boombox
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Default Check engine message

So my 2004 V70 has on a few occasions shown a "Engine service required" message. While the message is shown, the car is in limp mode. If I turn the ignition off and on (for example if waiting at lights) the message disappears and full power is restored.

The message seems to come up if/when the engine reaches higher revs but it's not particularly consistent. I've made a couple of journeys recently where I've needed to get up to the speed of traffic and the message has not appeared.

I've had the codes read and they are:-

P0087 - fuel rail/system pressure too low
P0088 - fuel rail/system pressure too high
P0244 - turbocharger wastegate regulating valve A range/performance problem
P0571 - cruise control/brake switch A - circuit malfunction.

I don't think the last code has anything to do with the engine message I've been getting but it would certainly explain why 1 time out of 10, the cruise control system won't turn on!

Anyone any ideas where I go from here? I don't want to start throwing money at this problem if I can at all avoid it!

many thanks
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Old Sep 13th, 2017, 21:04   #2
Darlo 1
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Fuel pressure could be the in tank pump is dead, should make a noise when the ignition is turned on.
The third code could be fuel filter blocked/collapsed, leaking intercooler,split boost hose/s, or the vairable vane in the turbo could be gummed up.
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Old Jan 16th, 2024, 00:28   #3
browart
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I've got the same thing at higher revs:

P0088 - fuel rail/system pressure too high
P0244 - turbocharger wastegate regulating valve A range/performance problem
P0571 - cruise control/brake switch A - circuit malfunction.

except this one:
P0087 - fuel rail/system pressure too low

ELM+Torque shows lower Boost pressure as usual (max.0.6 bar) and very high fuel rail pressure (up to 1500 bar).

Anyone had any previous experience with those codes?
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Old Jan 22nd, 2024, 15:59   #4
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Sorted: IC hose, small invisible hole, replaced.
None of these errors show up even with pedal on the floor 0-Vmax (German motorway
Boost back at 1.3bar, common rail pressure 350-700bar normal up to 1500bar in peak.
No errors.
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