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Matt
Matt, Mechanical Engineer
Category: Audi
Satisfied Customers: 21707
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I got problem on audi a6 s line 2.0 tdi oil presure

Customer Question

hi i got problem on audi a6 s line 2.0 tdi oil presure
Submitted: 1 year ago.
Category: Audi
Expert:  Shantal-Mod replied 1 year ago.
Hello,
I'm Shantal and I'm a moderator for this topic.
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Expert:  Matt replied 1 year ago.

Hello

I'd 1st suggest measuring the actual oil pressure with separate mechanical gauge - this can be plumbed into the engine via the current pressure switch port - if you use a Tee piece you can keep the pressure switch plumbed in as well and so see if the low pressure light corresponds to a low pressure reading.

If its intermittent and you have no rumbling or rattling noises from the engine its likely to be an electrical fault so 1st check the connection to the pressure switch is bright and clean and check back along the switch wiring for any signs of damage to the insulation

As if the wire is grounded out at any point then this will also turn on the light.

if this is all OK and the oil pressure is at least 1.3Bar ( 20psi) at hot idle then replace the switch

If you do have a low pressure reading and to turn on the light it will be very low about 5psi then replace the oil pump and ensure that the pump pickup in the sump hasn't come loose or is blocked

Expert:  Matt replied 1 year ago.

Hi

do you still need help?

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