Hello all,

My Rangie has been feeling a little lethargic of late and although the GAP iid tool can’t find any faults in the engine ecu, my Foxwell NT510 can! Symptoms when driving are gutless performance on motorway hills and if you know it Lindale Hill in South Lakes/Cumbria where I was down to 50 mph. In comparison, my 110 Defender flew up the same hill with less than half the power of the RR.
Fuel is only ever Super E5.

These are the codes:

P0000 Purge Valve output drive fault.
P0012 Camshaft Control Bank 1 fault
P0022 Camshaft Control Bank 2 fault
P0161 O2 sensor heater circuit Bank 2 downstream sensor fault
P0156 O2 sensor circuit bank 2 downstream sensor

I also read some live values to see if that revealed anything.
Purge Valve 0% duty regardless of throttle position
Cam Position Bank 1 21.185 degrees at idle
Cam Position bank 2 15.382 degrees at idle
Air leakage 6.9 kg/h
adaptations on all 8 were -20.843
Wanos Bank 1 94.9%
Wanos Bank 2 94.9%
Ignition Angle 6.75 degrees at idle and 14.25degrees when throttle blipped
Engine roughness on all 8 varied from 0.477 > -0.022 (each value was different)
Knock Threshold on all 8 varied from 15.625v > 8.203v

I was going to start googling these values but I thought I’d ask on here if any of you good people could shed light on what I should be checking or parts that may need changing….

When the timing chain guides got eaten and replaced, it had new plugs etc at the same time amongst other bits and foolishly I cleared the engine adaptation values which made it a pig to start and drive for a while.

Any help/pointers would be greatly appreciated 👍 I have tried search and only got one thread on the P0012 code that wasn’t answered. 2002 L322 4.4V8 - G4 Challenge Car - Australia leg
2003 Defender G4 110
2008 Discovery 3 G4
1968 Series 2a

This weekend, I decided to fit new crank position sensors and Vanos solenoids to see if it would improve things and remove a few codes…. It did not. The codes were cleared and the car driven but they are still the same values on the code reader live data. On the upside, I have new parts fitted and working spares, on the down side I lost a 10mm socket to the undertray

The codes mention plausibility so I’m wondering if this could be a wiring loom or ECU issue? It’s odd as there are definitely values being read by the code reader which alter as expected when driving. Just not on the VANOS which remain static at 94.9%…. 2002 L322 4.4V8 - G4 Challenge Car - Australia leg
2003 Defender G4 110
2008 Discovery 3 G4
1968 Series 2a

Just a shot in the dark, when my old V8 4.4 petrol got gutless the throttle pedal only went to 60% on the IID at WOT, you can check it with the IID, should read 100% when floored... obviously do it with the ignition on and engine off...

Good luck, hope you sort it....  Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Thanks Haylands, that was a good call to check. Just tried it but it’s showing 100% when the throttle is floored and progressively decreases as I take my foot off.
One less think to check though .

Click image to enlarge