2005 Jaguar XJ8L 'Engine Malfunction Amber Light Came On'
#1
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Hi. I began noticing a problem with my 2005 Jaguar XJ8L last Wednesday when I was driving down the expressway during the day. At one point, the engine began racing as if the car was suddenly thrown into neutral. I shrugged it off though as I thought that I simply drove over a icy spot on the pavement. Again, on Friday afternoon, while I was driving down the expressway, the engine began racing again (the tachometer immediately climbed). It acted as if the car was suddenly thrown into neutral again, and the same occurred Friday night as well. In fact, this seems to occur whether the engine is warm or cold.
In addition, while stopping at a stop sign, I sometimes also could feel a slight roughness while the engine was running. It wasn't until Saturday night when the 'Engine Malfunction' amber light then came on. Any thoughts? Thanks.
In addition, while stopping at a stop sign, I sometimes also could feel a slight roughness while the engine was running. It wasn't until Saturday night when the 'Engine Malfunction' amber light then came on. Any thoughts? Thanks.
#3
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https://www.ebay.com/itm/LAND-ROVER-...pe!49503!US!-1 (Jaguar XJ8 Code Reader)
Would this code reader be suitable?
Would this code reader be suitable?
#4
#5
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https://www.ebay.com/itm/LAND-ROVER-...pe!49503!US!-1 (Jaguar XJ8 Code Reader)
Would this code reader be suitable?
Would this code reader be suitable?
#6
#7
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Well, here are the codes that I got with the NT510 today.
Pending Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
Stored Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
Pending Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
Stored Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
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#8
#9
#10
#11
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Well, here are the codes that I got with the NT510 today.
Pending Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
Stored Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
Pending Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
Stored Codes:
P0303 Cylinder 3 misfire detected
P1316 Injector Circuit\IDM codes detected
1 Record flagged DTC (s) and accompanying WDS DTC Monitor freeze frame(s) data.
2 Fuel level > 25%.
3 Start the engine at a coolant temperature lower than the recorded freeze frame value (from Step 1).
4 Drive the vehicle to the recorded freeze frame conditions for 4 minutes. If CHECK ENGINE MIL flashes, lower the engine speed until the flashing stops.
Note regarding misfire monitor DTCs:
If, on the first trip, the misfire is severe enough to cause excess exhaust emission, the individual cylinder DTC plus DTC P1316 will be logged. The CHECK ENGINE MIL will not be activated. If the fault reoccurs on the second trip, the individual cylinder DTC plus DTC P1316 will be flagged, and the CHECK ENGINE MIL will be activated.
If, on the first trip, the misfire is severe enough to cause catalyst damage (more severe than excess exhaust emission), the CHECK ENGINE MIL will flash while the fault is present and the individual cylinder DTC plus DTC P1313 (bank 1), DTC P1314 (bank 2) will be logged. When the fault is no longer present the MIL will be deacti- vated. If the fault reoccurs on the second trip, the CHECK ENGINE MIL will flash while the fault is present and the individual cylinder DTC plus DTC P1313 (bank 1), DTC P1314 (bank 2) will be flagged. When the fault is no longer present the CHECK ENGINE MIL will be activated.
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I interpret your codes to mean you have a bad injector circuit @ Cylinder 3 and that's where I would begin my troubleshooting. May be easier to eliminate a bad plug, determine you're getting spark at the end of the plug first. Ensure there's no obvious signs of wiring damage on the injector and that its plugged in properly. Swap the coil to another cylinder and see if the code follows (that will tell you your coils' bad)
Edit: You can pull and swap spark plug to another cylinder. Does the code follow? Yes - spark plug is the problem.
No? Swap the coil with another cylinder does the code follow?
Last, swap the injector but careful of the o-ring seals. If she's a high mileage, get replacement seals in advance. Same dance on all of these really. Cheap to do, until you find the problem;-)
Last edited by Sean W; 01-25-2018 at 03:56 PM.
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djpxk8 (01-27-2018)
#12
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Well, I replaced the air filter today as it was visibly dirty, and I cleaned the MAF sensor while I was at it even though the MAF sensor did look clean. During the process, I managed to break off the plastic clip retainer that was part of the MAF sensor electrical jack, but I would imagine that it wouldn't have been the first time that something like that happened. I'll have to keep it secured with some small black cable ties or something.
Well, afterwards, I gave the Jaguar a short 2 mile rigorous test drive, and it performed flawlessly. Time will tell, however, so I'm likely going to know better by tomorrow.
Well, afterwards, I gave the Jaguar a short 2 mile rigorous test drive, and it performed flawlessly. Time will tell, however, so I'm likely going to know better by tomorrow.
#13
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Well, I replaced the air filter today as it was visibly dirty, and I cleaned the MAF sensor while I was at it even though the MAF sensor did look clean. During the process, I managed to break off the plastic clip retainer that was part of the MAF sensor electrical jack, but I would imagine that it wouldn't have been the first time that something like that happened. I'll have to keep it secured with some small black cable ties or something.
Well, afterwards, I gave the Jaguar a short 2 mile rigorous test drive, and it performed flawlessly. Time will tell, however, so I'm likely going to know better by tomorrow.
Well, afterwards, I gave the Jaguar a short 2 mile rigorous test drive, and it performed flawlessly. Time will tell, however, so I'm likely going to know better by tomorrow.
If or when it comes back, give my post above a try.
#14
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P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
Thanks for the very helpful suggestions Sean. The P1111 code actually led me to clean the MAF sensor, and replace a very dirty air filter during the process. Yes, if this doesn't work, I'll certainly look into the #3 injector circuit (as that would obviously be next). Thanks.
Thanks for the very helpful suggestions Sean. The P1111 code actually led me to clean the MAF sensor, and replace a very dirty air filter during the process. Yes, if this doesn't work, I'll certainly look into the #3 injector circuit (as that would obviously be next). Thanks.
Last edited by Rickkk; 01-25-2018 at 04:10 PM.
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Sean W (01-25-2018)
#15
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P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
Thanks for the very helpful suggestions Sean. The P1111 code actually led me to clean the MAF sensor, and replace a very dirty air filter during the process. Yes, if this doesn't work, I'll certainly look into the #3 injector circuit (as that would obviously be next). Thanks.
Thanks for the very helpful suggestions Sean. The P1111 code actually led me to clean the MAF sensor, and replace a very dirty air filter during the process. Yes, if this doesn't work, I'll certainly look into the #3 injector circuit (as that would obviously be next). Thanks.
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From page 3: If DTC P1111 is flagged after DTCs have been cleared, all engine management OBD diagnostic monitor drive cycles HAVE BEEN COMPLETED.
#16
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#18
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Sorry to hear Rick. Minimize the use of the vehicle if you can. If the misfire is bad enough, you can damage the catalytic converter. please keep us apprised of your findings.
Also, once you fix the problem, the light will go out on its own. So if the code follows the swaps, once you fix them, you shouldn't need to clear, just let the amber light go out by itself.
Also, once you fix the problem, the light will go out on its own. So if the code follows the swaps, once you fix them, you shouldn't need to clear, just let the amber light go out by itself.
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