Never seen the oil pressure one, so don't know what it would do. I think it will also be used by the engine ecu, to enable the lift pump if OK and activate the STOP w/l if not OK/engine running.MixMan wrote:Ok I am back from holiday and have logged the faults showing;
BSI = Intermittent oil pressure.
Engine ECU = (1) Permanent Fault. Turbo Pressure. Turbo measured to high.
(2) Remote intermittent fault. CAN communication. No communication with ABS.
Now the clutch was slipping a little on the drive there and back, would I be right in thinking that when it over-revs, that it will log the turbo boost being to high?
The turbo pressure one is common and almost certainly the cause of limp mode, (mine does this occasionally, gives A/P fault/EML + limp mode when it happens, next 3 or 4 journeys with A/P fault + EML, but no limp mode, clears on next journey).
The fault means you have exceeded the maximum boost pressure, the cause is invariably a vacuum leak somewhere, but can be hard to find. Your turbo actuator needs to have enough vacuum to be able to reduce the boost quickly enough as you accelerate to prevent this fault.
Clutch slip shouldn't cause the problem, but it's likely that the clutch will slip under the same conditions, (max torque, medium engine speed), as when the overboost happens.