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Discussion Starter #1
Hi everyone,

I have had my Captiva in the shop three times now beacuse the engine light (Yellow engine sign) is on. The first couple of times they reset it but it came up again after a few hours both times. The third time they changed some filters etc. but 5 minutes after driving out of the shop it came on again. It is now due to go in the shop next week, for the fourth time.....

After the second time they came up with code HP0504 + HP2031. These fault codes were reset.

The car drives completely normal, no problems whatsoever.

If anyone could please share their thoughts on this problem I would be very grateful.
 

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I had this on my VW Passat. Tell me, if you listen carefully, can you hear a change in the engine note when the light is on?

Does it sound a little rougher (albeit not very much)....
 

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Discussion Starter #3
Hard to say as the engine light is on constantly, and has been for two weeks since it came back from the shop.... Do you have a possible fix? Cannot really say that the engine sounds "differently" from what I remember from before it came on.
 

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VW changed 5 components which formed part of the ignition chain. The manual stated a faulty LAMBDA probe but this was not the case. As their computer could not button down the exact issue, they changed all 5 components. Never saw the problem since.

Even though you say the car runs the same, nothing is more annoying than a light staring at you from the dash. :-(
 

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Discussion Starter #5
Cheers - I will talk to the workshop manager about this possible solution and hear what he has to say.

Thanks again for your valuable input!
 

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I could not find what HP0504 was, my Genden resetter does not list it, however P0504 is brakeswitch A/Bcorrelation. Code H2031 is exhaust gas temperature circuit sensor (bank1 sensor2), again I could not find a code HP2031. I hope this helps you tell the dealer where the problems are.If you live in central Scotland I will reset your car for free, unfortunately myGenden does not fix the problem.
 

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Just to add a wee bit to what evo has said, the manual says the following for each code (no "H" here either)P0504 (00)
<ul>[*]The ECM detects that the brake lamp switch input and the cruise brake switch input do not match.[/list]

There are 2 values for the other code
P0544(03)<ul>[*]Exhaust gas temperature sensor 1 raw signal voltage is less than 98mV[/list]<div align="left"> P0544(07)
<ul>[*]Exhaust gas temperature sensor 1 raw signal voltage is greater than 4995mV[/list]

Means nothing to me other than I doubt that either of these points to a cause of the issue- I would guess that these are just symptoms.
Sorry I can't be of more help.
Iain
Edited by: bigiainw
 

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I dont know either, but I still have my b!oody engine light on and the f**** DPF flashing.



The code I have is P02E1, which I cant find anywhere. A diagnostic computer I have says a fault has been recorded but no code identified. The diagnostic reader on my SATNAV gives the code P02E1 which I cant find anywhere. The SATNAV will reset it, but it comes back on several moments later.


My garage cant reset the code, but the EGR valve has been replaced. I love my Captiva, but I'm ready to get shot.... really getting annoyed with this.



Had this problem now for MONTHS.....
 

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Aha, found it. It is in the diagnostics in the manual;
<table border="1" cellSpacing="0" width="100%">
<t align="center" vAlign="middle"><t><t><tr colspan=""><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">P02E1
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">11
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="left">Intake Air (IA) Flow Valve Control Performance (Above Maximum Threshold)
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">A
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">YES
</td></tr><tr colspan=""><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">P02E1
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">12
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="left">Intake Air (IA) Flow Valve Control Performance (Below Minimum Threshold)
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">A
</td><td vAlign="middle" rowSpan="1" width="" colSpan="1" align="center">YES
</td></tr></t></t></t>
</table>

I have no idea what that means, butI wonder if it's the air flow meter. A good spark should be able to sort it out, or at least work out if it's stuffed. It probably won't reset because it's a constant fault, so you can reset it, but as soon as you move, it will recur. I had the same with an ABS fault on a Renault once... Drove me bananas until I got it sorted out.

SorryI couldn't find it before- I may have looked in the wrong place, and there are a **** of a lot of codes!

Iain



Edited by: bigiainw
 

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I too have found it asP zero 2E1 I had been trying P oh 2E1. Sorry my manual simlys states "diesel intake airflow control performance".
 

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Managed to find this on the web, but it is all greek to me... Literally, I had to use Google Translate to translate to English... still dont understand it :(





<DIV id=c1f1p02e0 align=center closure_uid_8mdy7s="1542">DTCs P02E0, P02E1

<DIV closure_uid_8mdy7s="1543"><A name=c1f1dd2></A>DTC Description

Note: The symptom byte can not be displayed on a scan tool.

DTC P02E0 (01): The control circuit adjusting the air inlet valve (Short to Battery)

DTC P02E0 (02): Control circuit control valve air intake (short to ground)

DTC P02E0 (04): Control circuit control valve air inlet (open circuit)

<DIV closure_uid_8mdy7s="1541">DTC P02E0 (54): The control circuit adjusting the air inlet valve (high temperature)

DTC P02E1 (11): The efficiency of the control circuit adjusting the air inlet valve (above the maximum threshold)

DTC P02E1 (12): The efficiency of the control circuit adjusting the air inlet valve (below the minimum threshold)

<DIV closure_uid_8mdy7s="1544"><A name=c1f1cd2></A>Circuit / System Description

To maintain a high degree of exhaust gas recirculation system is used, the throttle (TAC) It increases the pressure difference between the output and intake, providing the right amount of mixing of the exhaust gases with intake air.

<DIV closure_uid_8mdy7s="1545">The ECM passes the desired angular position of the throttle on the throttle control module (TAC) as a signal to the PWM. TAC module activates the DC motor that controls the throttle position based on the input signal with pulse-width modulation. Set the throttle to the desired position is provided by the internal feedback circuit with a potentiometer, which does not require external control of power by the ECM.

<A name=c1f1crd2></A>Conditions for Running the DTC

P02E0 (01) and P02E0 (54)

<UL>
<LI>Filed on command throttle actuator
<LI>Ignition switch position.
<LI>Battery voltage less than 16.5V </LI>[/list]
P02E0 (02) and P02E0 (04)

<UL>
<LI>Filed team off the throttle actuator
<LI>Ignition switch position.
<LI>Battery voltage less than 16.5V </LI>[/list]
P02E1 (11) and P02E1 (12)

<UL>
<LI>Ignition switch position. </LI>[/list]
<A name=c1f1csd2></A>Conditions for Setting the DTC.

<DIV closure_uid_8mdy7s="1518">P02E0 (01)

<UL closure_uid_8mdy7s="1522">
<LI closure_uid_8mdy7s="1521">There is shorted to battery control circuit for throttle drive </LI>[/list]
<DIV closure_uid_8mdy7s="1515">P02E0 (02)

<UL>
<LI>There is shorted to battery control circuit for throttle drive </LI>[/list]
P02E0 (04)

<UL>
<LI>There is a gap in the chain of control throttle actuator </LI>[/list]
<DIV closure_uid_8mdy7s="1514">P02E0 (54)

<UL closure_uid_8mdy7s="1520">
<LI closure_uid_8mdy7s="1519">A high temperature in the chain of the throttle </LI>[/list]
<DIV closure_uid_8mdy7s="1468">P02E1 (11)

<UL closure_uid_8mdy7s="1517">
<LI closure_uid_8mdy7s="1516">The ECM detects that the deviation of the air flow during the regeneration points to the excessive consumption of the exhaust gas recirculation </LI>[/list]
<DIV closure_uid_8mdy7s="1465">P02E1 (12)

<UL>
<LI>The ECM detects that the deviation of the air flow during regeneration indicates insufficient flow of exhaust gas recirculation </LI>[/list]
<DIV closure_uid_8mdy7s="1466"><A name=c1f1atwd2></A>Actions Taken When the DTC

<UL closure_uid_8mdy7s="1453">
<LI closure_uid_8mdy7s="1452">DTC P02E0 a diagnostic fault code of type E.
<LI>DTC P02E1 a diagnostic fault code of type A. </LI>[/list]
See "Diagnostic trouble code"

<A name=c1f1ccm2></A>Conditions for Clearing the DTC / MIL

<UL>
<LI>DTC P02E0 a diagnostic fault code of type E.
<LI>DTC P02E1 a diagnostic fault code of type A. </LI>[/list]
See "Diagnostic trouble code"

<DIV closure_uid_8mdy7s="1513"><A name=c1f1da2></A>Diagnostic Information

To obtain information about the condition of intermittent condition, refer to "Intermittent Conditions."

<DIV id=c1f1p02e01 align=center closure_uid_8mdy7s="1469">DTC P02E0, P02E1

<TABLE border=1 cellSpacing=0 width="100%" closure_uid_8mdy7s="1473">
<T =#eeeeee closure_uid_8mdy7s="1512">
<TR closure_uid_8mdy7s="1511">
<TD align=middle>Step</TD>
<TD align=middle closure_uid_8mdy7s="1510">Operation</TD>
<TD align=middle>Values</TD>
<TD align=middle>Yes</TD>
<TD align=middle>No</TD></TR></T>
<T closure_uid_8mdy7s="1472">
<TR closure_uid_8mdy7s="1471">
<TD width="6%" align=middle>1</TD>
<TD width="49%" closure_uid_8mdy7s="1470">
Did you perform the Diagnostic System Check?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 2
</TD>
<TD width="15%" align=middle>
Back to the item "Diagnostic System Check."
</TD></TR>
<TR closure_uid_8mdy7s="1477">
<TD width="6%" align=middle>2</TD>
<TD width="49%" closure_uid_8mdy7s="1476">

  1. <LI>To study the data recorded on the fault for this DTC.
    <LI closure_uid_8mdy7s="1474">Turn off the ignition for 30 seconds.
    <LI closure_uid_8mdy7s="1509">Turn the ignition with the engine.
    <LI>Vehicle within the Conditions Running the DTC. You can also create a vehicle within the conditions that were observed on the basis of data recorded on the abuse of work.</LI>
<DIV closure_uid_8mdy7s="1478">DTC fail this ignition?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle closure_uid_8mdy7s="1540">
Go to Step 3
</TD>
<TD width="15%" align=middle closure_uid_8mdy7s="1524">
<DIV closure_uid_8mdy7s="1523">Jump to a point "Intermittent Conditions"
</TD></TR>
<TR closure_uid_8mdy7s="1482">
<TD width="6%" align=middle>3</TD>
<TD width="49%" closure_uid_8mdy7s="1481">

  1. <LI closure_uid_8mdy7s="1508">Turn off the ignition for 30 seconds.
    <LI>Disconnect the wiring harness connector from the module TAC.
    <LI closure_uid_8mdy7s="1479">Connect a test lamp between the chain of supply voltage and control circuit module TAC.
    <LI>Turn the ignition with the engine.
    <LI closure_uid_8mdy7s="1507">Select check the throttle actuator in the control menu outputs diagnostic tool.
    <LI>Give the command to set a parameter for controlling the drive throttle to 0%. </LI>
<DIV closure_uid_8mdy7s="1506">The test lamp illuminate?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle closure_uid_8mdy7s="1526">
<DIV closure_uid_8mdy7s="1525">Go to Step 8
</TD>
<TD width="15%" align=middle>
Go to Step 4
</TD></TR>
<TR closure_uid_8mdy7s="1505">
<TD width="6%" align=middle>4</TD>
<TD width="49%" closure_uid_8mdy7s="1504">
Diagnostic tool to give the command to set a parameter for controlling the drive throttle to 100%.

<DIV closure_uid_8mdy7s="1503">The test lamp illuminate?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 6
</TD>
<TD width="15%" align=middle>
Go to Step 5
</TD></TR>
<TR>
<TD width="6%" align=middle>5</TD>
<TD width="49%">

  1. <LI>Turn off the ignition for 30 seconds.
    <LI>Connect a test lamp between the battery voltage circuit and control circuit module TAC.
    <LI>Turn the ignition with the engine.
    <LI>Diagnostic tool to give the command to set a parameter for controlling the drive throttle to 100%. </LI>
The test lamp illuminate?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 9
</TD>
<TD width="15%" align=middle>
Go to Step 7
</TD></TR>
<TR>
<TD width="6%" align=middle>6</TD>
<TD width="49%">

  1. <LI>Turn off the ignition.
    <LI>Make sure to turn off the power controller engine control module (ECM).
    <LI>Connect a test lamp between the chain of supply voltage and ground circuit module TAC.
    <LI>Turn the ignition with the engine. </LI>
The test lamp illuminate?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 11
</TD>
<TD width="15%" align=middle>
Go to Step 10
</TD></TR>
<TR>
<TD width="6%" align=middle>7</TD>
<TD width="49%">
Test the control circuit module TAC for the following conditions:

<UL>
<LI>Break
<LI>A short to voltage
<LI>High resistance. </LI>[/list]
Find and correct?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
Go to Step 12
</TD></TR>
<TR>
<TD width="6%" align=middle>8</TD>
<TD width="49%">
Test the control circuit module TAC for short to ground.

Find and correct?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
Go to Step 12
</TD></TR>
<TR>
<TD width="6%" align=middle>9</TD>
<TD width="49%">
Check the voltage supply circuit module TAC for an open or high resistance.

Find and correct?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
Go to Step 11
</TD></TR>
<TR closure_uid_8mdy7s="1501">
<TD width="6%" align=middle closure_uid_8mdy7s="1500">10</TD>
<TD width="49%">
Check the ground circuit module TAC for an open or high resistance.

Find and correct?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
Go to Step 11
</TD></TR>
<TR>
<TD width="6%" align=middle>11</TD>
<TD width="49%">
Check for intermittent and unreliable connection module TAC.

Find and correct?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
Go to Step 13
</TD></TR>
<TR>
<TD width="6%" align=middle>12</TD>
<TD width="49%">
Check the ECM for the presence of intermittent or poor connection.

Find and correct?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
Go to Step 14
</TD></TR>
<TR closure_uid_8mdy7s="1499">
<TD width="6%" align=middle>13</TD>
<TD width="49%" closure_uid_8mdy7s="1498">
Replace the module TAC.

<DIV closure_uid_8mdy7s="1502">Replacement is made?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
-
</TD></TR>
<TR>
<TD width="6%" align=middle>14</TD>
<TD width="49%">
Replace the ECM.

Replacement is made?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 15
</TD>
<TD width="15%" align=middle>
-
</TD></TR>
<TR closure_uid_8mdy7s="1497">
<TD width="6%" align=middle>15</TD>
<TD width="49%" closure_uid_8mdy7s="1496">

  1. <LI>With a scan tool to reset codes DTC.
    <LI>Turn off the ignition for 30 seconds.
    <LI closure_uid_8mdy7s="1494">Start the engine.
    <LI>Vehicle within the Conditions Running the DTC. You can also create a vehicle within the conditions that were observed on the basis of data recorded on the abuse of work.</LI>
DTC fail this ignition?
</TD>
<TD width="15%" align=middle>
-
</TD>
<TD width="15%" align=middle>
Go to Step 2
</TD>
<TD width="15%" align=middle>
Go to Step 16
</TD></TR>
<TR closure_uid_8mdy7s="1487">
<TD width="6%" align=middle>16</TD>
<TD width="49%" closure_uid_8mdy7s="1486">
<DIV closure_uid_8mdy7s="1485">Check if any additional DTCs are set.

Are there any codes DTC, which have not yet been diagnosed?
</TD>
<TD width="15%" align=middle closure_uid_8mdy7s="1489">
<DIV closure_uid_8mdy7s="1488">-
</TD>
<TD width="15%" align=middle closure_uid_8mdy7s="1491">
<DIV closure_uid_8mdy7s="1490">Go to applicable DTC table
</TD>
<TD width="15%" align=middle closure_uid_8mdy7s="1492">
System OK
</TD></TR></T></TABLE>
 

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....


But the bit that says...



<DIV closure_uid_8mdy7s="1468">P02E1 (11)

<UL closure_uid_8mdy7s="1517">
<LI closure_uid_8mdy7s="1516">The ECM detects that the deviation of the air flow during the regeneration points to the excessive consumption of the exhaust gas recirculation </LI>[/list]

Is interesting, as this could be why my DPF is staying on .... could it
 

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K.L.Richards said:
....


But the bit that says...



<div closure_uid_8mdy7s="1468">P02E1 (11)

<ul closure_uid_8mdy7s="1517">
<li closure_uid_8mdy7s="1516">The ECM detects that the deviation of the air flow during the regeneration points to the excessive consumption of the exhaust gas recirculation [/list]

Is interesting, as this could be why my DPF is staying on .... could it
That would be my guess!

Iain
 

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Discussion Starter #16
UPDATE!

The fault codes are now P2031, P2084 and P20E2. As before these faults are related to the back exhaust temperature. Both sensors there were changed, but there also seems to be some bad connections in the wiring to these sensors, this they found out after literally pulling the wires making the fault constant. They are now fixing this.

Thanks so far everyone!
 
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