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| alantd Member Since: 14 Dec 2008 Location: Northamptonshire Posts: 1513   
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Given that there are an increasing number of us with one diagnostic system or another (and this isn't the thread to compare which ones are better), I thought it would be a good idea to log what codes are getting reported and what they might mean.
I don't mean to try and match numbers to descriptions - there are some great resources out there already (check Dgargel's postings) but what we might interpret by the codes. There are a few people who have significant experience with these engines and not all codes are to be worried about. We can compile a list of common codes, whether they are abnormal and what to do about them (including deleting them). To start us off, here's my current crop of codes: 0404-73 EGR control circuit range/performance: actuator stuck closed 0100-29 mass or volume air flow A circuit: signal invalid 0299-00 turbocharger A under boost condition 1402-2F EGR control valve metering orifice restricted: signal erratic 0340-23 Camshaft position (CMP) sensor A circuit (bank 1 or single sensor): signal stuck low 1103-00 Mass air flow (MAF) sensor in range but higher than expected 0234-00 turbocharger A over boost condition Some of them don't look like an issue to me. I know that deleting the codes will mean that a dealer won't be able to see them but I'm out of warranty and I reason that if they are real and persistent, they'll return. Agree? Please add your codes and comments below and maybe we can put together a "so what" guide for those who will be reading codes in the future. Alan One that started out as a 2.4 TDCi 110 XS + New Defender 110 First Edition |
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7th Feb 2011 3:55pm |
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| alantd Member Since: 14 Dec 2008 Location: Northamptonshire Posts: 1513
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Glyn, Dgardel - I've taken the liberty of posting your codes and responses from an earlier thread.
P167B- Fuel Injector Learning Not Done you have done Q068 but dealer do not done injectors learning (same mounths ago LR system given errors on this procedure) P0562- System Voltage Low battery related to the cold temp not a real problem P068A- CM/PCM Power Relay De-Energized Performance - Too Early see previous point P0234- Turbocharger/Supercharger "A" Overboost Condition normal on all Puma that I have seen P1103- Mass Air Flow Sensor In Range But Higher Than Expected normal on all Puma that I have seen P0100- Mass or Volume Air Flow "A" Circuit related to BAS remap but not really a problem new version are ok now, write to Pete P0299- Turbocharger/Supercharger "A" Underboost Condition normal on all Puma that I have seen U0001- High Speed CAN Communication Bus related to BAS remap but not really a problem new version are ok now, write to Pete P1643- CAN link to ABS ECU.Implausible signal/condition U0300- Internal Control Module Software Incompatibility related to BAS remap but not really a problem new version are ok now, write to Pete One that started out as a 2.4 TDCi 110 XS + New Defender 110 First Edition |
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7th Feb 2011 3:58pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
With reference to fault codes:
P0404, P0100 and P0299 http://www.defender2.net/forum/topic5125.html |
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7th Feb 2011 7:34pm |
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| mse Member Since: 06 Apr 2008 Location: UK Posts: 5034 
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Some of the MAF and EGR's are linked (you get one with the other) Mike
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7th Feb 2011 7:59pm |
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| alantd Member Since: 14 Dec 2008 Location: Northamptonshire Posts: 1513
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Gosh - that's a bit worrying. My local dealer hasn't really shown themselves to be too hot when it comes to "thinking outsid the box". Given that I'm not und warranty now, it could prove very expensive for them not to arrive at a conclusion. Maybe I should clear the codes and see when there they reappear over the course of the week. Having said that, I don't suffer the same symptoms that you did. My fuel consumption is around 25 and always has been; I can get above 2600 in 6th (although I rarely try). Worth monitoring, I guess. One that started out as a 2.4 TDCi 110 XS + New Defender 110 First Edition |
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8th Feb 2011 12:47am |
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| mse Member Since: 06 Apr 2008 Location: UK Posts: 5034
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Alan You are probably in the same boat as me - clear the faults (you can save them in nanocom first which is what i would do) and then see what you get after a few drives. Ive had EGR closed and open faults - mainly closed (which is good) but i find that the faults go hand in hand with other things like the MAF errors. But then all of that is only intermittent. Looking at the loom (as i was on Sunday) i cant see that being at fault, it doesnt look stressed at all...i could believe there may be a MAF fault (i was told when i got the car their failures were common...and they had been on my wifes VW) - the EGR the faulting could be down to the MAF (or the otherway round). Im replacing the MAF and if the fault persists then ill get the EGR blank patch from BAS probably save messing with replacing the EGR i dont want (but is definately working anyway) Mike |
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8th Feb 2011 8:30am |
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| bell-auto-services Member Since: 08 Jul 2007 Location: North Yorkshire Posts: 2232 
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Ive not read all of the posts but id just like to say some codes shown on some tools and cars are non tested DTC's and are not a cause to worry. Its a pain in the arse that these are shown to be honest and does cause confusion sometimes.
Re finding out what a P code means, if you visit my web site www.bellautoservices.co.uk and use the search button top left , enter your code and it will show you the meaning. Pete |
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8th Feb 2011 9:01pm |
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| alantd Member Since: 14 Dec 2008 Location: Northamptonshire Posts: 1513
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Good call everyone. This is why I thought a thread would make sense. Aa more and more folks enter the world of self-diagnosis, we should pool experiences and draw on the feepw amongst us who really know about these things
As I spot more info I'll try and collate it here.  One that started out as a 2.4 TDCi 110 XS
+ New Defender 110 First Edition |
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9th Feb 2011 1:11am |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2401  
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I have seen the following codes before. WTH do they mean?
02A0 - 00 Cylinder 2 balance - (injector 4) restricted --- 02A8 - 00 Cylinder 4 balance - (injector 3) restricted --- 02A4 - 00 Cylinder 3 balance - (injector 2) restricted --- 029C - 00 Cylinder 1 balance - (injector 1) restricted Puma 110" SW ............................................................. Earth first. Other planets later |
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10th Feb 2011 1:51pm |
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| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1776  
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Could the technically marvelous amongst the forum group the more common codes into groups for the less able umongst us?
Suggest 1) IGNORE IT, ITS A ERROR IN THE SYSTEM 2) IGNORE IT, IT MIGHT GO AWAY 3) BETTER WATCH THAT ONE 4) BETTER CHECK CREDIT CARD BALANCE 5)  - SELL IT QUICK!
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10th Feb 2011 7:43pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2401
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ANYBODY?  Puma 110" SW
............................................................. Earth first. Other planets later |
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12th Feb 2011 11:00am |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015  
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Description P02A000 Cylinder 2 balance - (injector 4) restricted Possible Cause * Injector leak * Cylinder compression low - Blow-by past the injector - Blow-by past the glow plug - Mechanical fault, valve, piston/ring, etc. * Injector fault Actions Check the injector and surrounding area for evidence of fuel leakage. Disconnect the injector and check for evidence of fuel leakage in the connector. Rectify as necessary. Clear the DTCs. Reconnect the injector and start the engine. Allow to warm up and allow to idle (cylinder balance diagnosis is now active). If the DTC resets, check for blow-by etc. and rectify as necessary. Clear the DTCs and recheck. Carry out a compression test only if the DTC resets. If the above tests are all within range, install a new injector. For additional information, refer to: Fuel Injector (303-04A Fuel Charging and Controls - 2.4L Duratorq-TDCi HPCR (103kW/140PS) - Puma, Removal and Installation). Clear the DTCs and test for normal operation. I had this same code... checked all the injectors... no problems so deleted them and no problems since
Glyn   |
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13th Feb 2011 2:55pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2401
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[quote="alantd"]Glyn, Dgardel - I've taken the liberty of posting your codes and responses from an earlier thread.
P167B- Fuel Injector Learning Not Done you have done Q068 but dealer do not done injectors learning (same mounths ago LR system given errors on this procedure) WHAT DOES IT MEAN injectors learning Puma 110" SW ............................................................. Earth first. Other planets later |
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15th Feb 2011 4:49pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
Thought I would try and explain the differences in DTC codes. So here goes:
There are basically two types of DTC codes for OBDII Diagnostics: Emissions related DTC's Tested DTC's Type A 1. Emissions related. 2. The Malfunction Indicator Lamp (MIL) will be illuminated as soon as the error occurs. 3. Stores a freeze frame DTC after one failed driving cycle.( history DTC is stored ) Type B 1. Emissions related. 2. Sets a Pending Trouble Code after one failed driving cycle. 3. Clears a Pending Trouble Code after one successful driving cycle. 4. Turns on the MIL after two/three consecutive failed driving cycles. 5. Stores a Pending Trouble Code as a DTC after two consecutive failed driving cycles. Conditions for Clearing the MIL/DTC – Type A or Type B The MIL will turn off after four consecutive driving cycles in which the diagnostic runs without a fault. A history DTC will clear after 40 consecutive warm up cycles without a fault. DTC(s) can be cleared by using a scan/diagnostic tool. Non–Emissions Related DTCs Un Tested DTC's Action Taken When the DTC Sets 1. The Malfunction Indicator Lamp (MIL) will not illuminate. 2. The ECM will record a DTC at the time the diagnostic fails. Conditions for Clearing the DTC A history DTC will clear after 40 consecutive warm up cycles without a fault. DTC(s) can be cleared by using a scan/diagnostic tool. How to read a DTC Code The DTC value will help you narrow down the specific component or module in question. A DTC has a standardized format that can be interpreted as follows: The first part of the DTC is the Alpha Designator. The alpha designator will be: B - Body electronics (i.e., door and hood latches) C - Chassis (i.e., traction control or ABS) P - Powertrain (i.e., engine, transmission) U - Network communications for the different control modules Second Digit - Code Type The second digit identifies whether the code is a generic code (same on all OBD-II equpped vehicles), or a manufacturer specific code. 0 = Generic (The diagnostic codes that are required by law on all OBD II systems are "generic" in the sense that all vehicle manufacturers use the same common code list and the same 16-pin diagnostic connector. Thus, a P0301 misfire code on a Ford means the same thing on a Vauxhall, Citroen, Toyota or Mercedes.) 1 = Enhanced ( Each vehicle manufacturers also have the freedom to add their own "enhanced" codes to provide even more detailed information about various faults. Enhanced codes also cover non-emission related failures that occur outside the engine control system. These include ABS codes, HVAC codes, airbag codes and other body and electrical codes.) Third Digit - Sub-System The third digit denotes the type of sub-system that pertains to the code 1 = Emission Management (Fuel or Air) 2 = Injector Circuit (Fuel or Air) 3 = Ignition or Misfire 4 = Emission Control 5 = Vehicle Speed & Idle Control 6 = Computer & Output Circuit 7 = Transmission 8 = Transmission 9 = SAE Reserved 0 = SAE Reserved Fourth and Fifth Digits These digits, along with the others, are variable, and relate to a particular problem code error number So let's diagnose a DTC, I've picked P0404-73 EGR control circuit range/performance: actuator stuck closed so we have: P = Powertrain (engine, transmission) 0 = Generic 4 = Emissions control 0 4 =This is the specific error code within Emission control. In this case the EGR control circuit range/performance -73= This is a specific problem, in this case the actuator is stuck closed. 72 means its stuck open. Hope this helps somebody, somewhere  And please highlight any errors, mistakes as I am still learning about diagnostics and any help would be appreciated Last edited by Lorryman100 on 13th Jan 2012 12:11am. Edited 1 time in total |
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15th Feb 2011 8:27pm |
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