Advertise on DISCO3.CO.UK
Forum · Gallery · Wiki · Shop · Sponsors
DISCO3.CO.UK > IIDTool Help

HELP! - all ok and now a host of codes.....
Post Reply  Down to end
Page 1 of 1
will.i.am
 


Member Since: 05 May 2016
Location: hertfordshire
Posts: 250

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Keswick GreenDiscovery 3
HELP! - all ok and now a host of codes.....

Anyone have any experience of the below barrage of codes?

  
Post #227281714th Jan 2022 2:07 pm
View user's profile Send private message View poster's gallery Send e-mail Reply with quote
rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

The only one that counts is the first one. Ignore the 'U' codes.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #227281814th Jan 2022 2:10 pm
View user's profile Send private message View poster's gallery Reply with quote
will.i.am
 


Member Since: 05 May 2016
Location: hertfordshire
Posts: 250

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Keswick GreenDiscovery 3

thanks pal, nice to know the U ones are irrelevant. any ideas what the others would be?

i have checked the actuator and its moving freely in both ways, also moves when you turn on ignition. Im getting 230kpa or just above when driving so I don't think i've got a loose boost pipe on that.

im not sure what the TC code is though.....
  
Post #227282014th Jan 2022 2:13 pm
View user's profile Send private message View poster's gallery Send e-mail Reply with quote
grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6265

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

P023D-21

aka P023D21
Description

Manifold absolute pressure (MAP) sensor/right-hand turbocharger boost sensor correlation - signal amplitude less than minimum
Meaning

The turbocharger boost pressure the engine ECU (PCM) is seeing is less than the minimum it was expecting. So the turbo is underboosting.
Causes

Intake air system fault
Turbocharger mechanical fault
Oil ingestion into manifold

Resolution

Check the intake air system.
Check the turbocharger mechanical condition and operation.
Check for oil being drawn into the intake manifold.
Rectify as necessary.
Using a data logger function, monitor the turbocharger actuator position and command the actuator to 5% pulse width modulated (PWM), then 95% pulse width modulated (PWM) in 5% steps. Check the results. There should be a smooth curve between the minimum and maximum values. If not, install a new turbocharger.
Clear the DTCs and test for normal operation.

Notes

May be sticky turbocharger actuator arm?
Top air hose into front of engine split

P023D-22

aka P023D22
Description

Manifold absolute pressure (MAP) sensor/right-hand turbocharger boost sensor correlation - signal amplitude greater than maximum
Meaning

The turbocharger boost pressure the engine ECU (PCM) is seeing is more than the maximum it was expecting. So the turbo is overboosting.
Causes

Intake air system fault
Turbocharger mechanical fault
Intake air temperature (IAT) sensor fault
Mass air flow (MAF) sensor fault
Manifold absolute pressure and temperature (MAPT) sensor fault
Exhaust gas recirculation (EGR) sensor fault
Turbocharger actuator position sensor fault

Resolution

Check the intake air system.
Check the turbocharger mechanical condition and operation.
Check for DTCs indicating a listed sensor fault.
Rectify as necessary.
Using a data logger function, monitor the turbocharger actuator position and command the actuator to 5% pulse width modulated (PWM), then 95% pulse width modulated (PWM) in 5% steps. Check the results. There should be a smooth curve between the minimum and maximum values. If not, install a new turbocharger.
Clear the DTCs and test for normal operation.

Notes

May be sticky turbocharger actuator arm?
  
Post #227282114th Jan 2022 2:15 pm
View user's profile Send private message View poster's gallery Reply with quote
grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6265

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

https://www.obd-codes.com/p023d
  
Post #227282214th Jan 2022 2:15 pm
View user's profile Send private message View poster's gallery Reply with quote
will.i.am
 


Member Since: 05 May 2016
Location: hertfordshire
Posts: 250

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Keswick GreenDiscovery 3

im poretty sure that hoses etc are ok as they are relatively new silicon hoses but i will check them all. before i go down the route of checking the turbo, does anyone think it could be a map sensor issue? - if so that would be an easy replacement....just not too sure how to check it.
  
Post #227282314th Jan 2022 2:21 pm
View user's profile Send private message View poster's gallery Send e-mail Post Reply
Display posts from the last:  
Post Reply Back to top
Page 1 of 1
Jump to:  
Previous Topic | Next Topic >


Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



DISCO3.CO.UK Copyright © 2004-2024 Futuranet Ltd & Martin Lewis
DISCO3.CO.UK RSS Feed - All Forums

DISCO3.CO.UK is independent and not affiliated to Land Rover.
Switch to Mobile Site