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Warkman



Member Since: 05 Dec 2017
Location: Warwickshire
Posts: 13

United Kingdom 2012 Range Rover Vogue TDV8 Orkney Grey
“Critical Engine system” anyone had this?

2012 4.4 v8 Deisel
Started this morning and got the red triangle with the words “critical engine systems”

Has anyone had this?

Post #654149 20th Jan 2023 3:06pm
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Warkman



Member Since: 05 Dec 2017
Location: Warwickshire
Posts: 13

United Kingdom 2012 Range Rover Vogue TDV8 Orkney Grey

Well, I connected to GAP iid and these were the only four engine errors showing:

Click image to enlarge
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Post #654159 20th Jan 2023 4:48pm
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Kot



Member Since: 10 Mar 2021
Location: broadland
Posts: 1202

United Kingdom 

Can you clear them (DTC) and see what returns as some of these have activated at a different mileage, the last being throttle peddle position, which must be the culprit 2018 SE SDV8 4.4 Byron Blue

Post #654171 20th Jan 2023 6:06pm
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garyRR



Member Since: 13 Mar 2021
Location: Hampshire
Posts: 1465

United Kingdom 

Usual cause of this error is:

A) dirty MAP sensor. When was it last cleaned?

B) failed o-ring inside the plastic pipe connection on the throttle body - check for oily soot in the vicinity. Diagnostic / temporary fix is to use gas spec PTFE tape or silicone tape wrapped around the throttle body union

C) A split donut hose or top intercooler hose. Check for splits in the small 4 hoses on the donut and the 2 large ones near the front of the engine bay

Once all are covered, try a steady motorway cruise for 20 miles and if it still hasn't cleared / returns, force a DPF regen with the IID tool. 2015 Range Rover Autobiography 4.4 SDV8

Post #654178 20th Jan 2023 6:41pm
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Warkman



Member Since: 05 Dec 2017
Location: Warwickshire
Posts: 13

United Kingdom 2012 Range Rover Vogue TDV8 Orkney Grey

Kot wrote:
Can you clear them (DTC) and see what returns as some of these have activated at a different mileage, the last being throttle peddle position, which must be the culprit


Yes, noticed tgat so I’m doing that tomorrow now I have the GAP change car code

Post #654180 20th Jan 2023 7:07pm
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