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Oil level

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1997 2.5 tiptronic.

Just got back on the road after 12 month lay up due to brake pipe problems and winter weather, had the oil changed while at it. It drives fine except according to the dash display the oil is too low and the oil warning light flashes for a fraction of a second every 15 minutes or so. However according to the dipstick the oil level is at maximum.

Any ideas anyone?

Just to keep me happy as I started typing this the the alarm went off and it has decided to go on and off even with the doors unlocked, had to disconnect the battery to stop it.


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You should never have your oil at maximum as it does not register "over maximum" -- too easy to over-fill. Always keep it one bar or so below maximum.

You could have an intermittent oil level sender unit.

Fault code 9121 Oil pressure

Possible cause of fault- Sensor for oil pressure indicator faulty- Short circuit to voltage/ground or open circuit in the wiring between the sensor for oil pressure indicator and instrument cluster


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Hi Loren

the dash display does not register any bars atall, does its flashing sequence then at the end none of the bars are solid, the oil was changed at the garage, (he also has a Boxster), and is at the maximum level on the dipstick

I will do the checks as listed in your reply, thanks


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