PLEASE HELP - serious 'safe mode' problems!!!!
Discussion
Hello all,
I have a 2005 VZ 6.0 LS2 Maloo and have been having problems with the car going into safe mode almost since I've owned it (over 2 years). No one can fix it and it is sending me insane hence the topic title!
These are the codes it is throwing up:
P2176 Throttle actuator
P2101 Throttle actuator
P1516 Throttle actuator
P0223 Throttle Posision Sensor 2 High imput
So far it has had the throttle body changed, the PCM changed and the accelerator pedal changed. After changing the these things the fault would go away for a while and then slowly come back going into safe mode more and more again. I'm guessing thats because the code would be cleared and the car wouldn't be looking for the code to start with. I have also looked at the loom and can see no visible damage. It goes into safe mode almost every time it is driven and happens during all types of weather and driving etc.
I am at my whits end with this. Someone PLEASE help
I have a 2005 VZ 6.0 LS2 Maloo and have been having problems with the car going into safe mode almost since I've owned it (over 2 years). No one can fix it and it is sending me insane hence the topic title!
These are the codes it is throwing up:
P2176 Throttle actuator
P2101 Throttle actuator
P1516 Throttle actuator
P0223 Throttle Posision Sensor 2 High imput
So far it has had the throttle body changed, the PCM changed and the accelerator pedal changed. After changing the these things the fault would go away for a while and then slowly come back going into safe mode more and more again. I'm guessing thats because the code would be cleared and the car wouldn't be looking for the code to start with. I have also looked at the loom and can see no visible damage. It goes into safe mode almost every time it is driven and happens during all types of weather and driving etc.
I am at my whits end with this. Someone PLEASE help
FIXED!!!!!!!!!
Thanks to everyone that helped along the way. Monkfish, Blair at dynotorque, Eden Vauxhall and especially Paul at wortec who was eventually the man to fix it. After about a year and a half of problems I finally have a working ute! After Blair and Monkfish ran out of ideas I was a little worried to say the least!
To my limited knowledge I will best describe what the cause was to help others out with similar issues.
Here are the findings paul made:
We have checked the voltage drops across the pedal and throttle body circuits and set up data logging for these circuits, looking at voltage and resistance.
It looks like we have found an event just before the car fails where the voltage on circuit A increases and circuit B does not follow. This error is above the 4% allowed by the PCM so it puts the car in limp home mode.
So it it looks like the problem is from the throttle body to the PCM and not the pedal to PCM.
Paul later on discovered that is was caused by a magnetic field. The cable from the throttle body was being affected by the magnetic field being created by the fan coming on. To fix the problem a section of cable from the throttle body to the pcm was cut out and replaced with new cable which had better resistance better magnetic shielding. The voltage in this cable is now a lot further away from the failure point and the problem has FINALLY been fixed.
Please correct me paul if I have made a mistake.
Thanks again everyone,
One very happy owner! (fingers crossed this curse doesn't return)
Thanks to everyone that helped along the way. Monkfish, Blair at dynotorque, Eden Vauxhall and especially Paul at wortec who was eventually the man to fix it. After about a year and a half of problems I finally have a working ute! After Blair and Monkfish ran out of ideas I was a little worried to say the least!
To my limited knowledge I will best describe what the cause was to help others out with similar issues.
Here are the findings paul made:
We have checked the voltage drops across the pedal and throttle body circuits and set up data logging for these circuits, looking at voltage and resistance.
It looks like we have found an event just before the car fails where the voltage on circuit A increases and circuit B does not follow. This error is above the 4% allowed by the PCM so it puts the car in limp home mode.
So it it looks like the problem is from the throttle body to the PCM and not the pedal to PCM.
Paul later on discovered that is was caused by a magnetic field. The cable from the throttle body was being affected by the magnetic field being created by the fan coming on. To fix the problem a section of cable from the throttle body to the pcm was cut out and replaced with new cable which had better resistance better magnetic shielding. The voltage in this cable is now a lot further away from the failure point and the problem has FINALLY been fixed.
Please correct me paul if I have made a mistake.
Thanks again everyone,
One very happy owner! (fingers crossed this curse doesn't return)
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