Code P3081
#12
This pesky code has come to me today in the form of an 04 audi A8. The car came in with the engine fan on High and the temp gauge full cold. heat from heater was good. cleared the code and everything went back to normal! fan turned down and guage read engine temp, which still read a bit low. I am in the middle of diag right now so I'll post back what I find.
The actual P3081 code means this according to VAGCOM.
"engine temp too low, implausible signal-MIL on
hope this helps
The actual P3081 code means this according to VAGCOM.
"engine temp too low, implausible signal-MIL on
hope this helps
#13
AudiWorld Member
I get the similar info in eBahn repair manual for 2003 A6 2.7 w/ BEL engine:
SAE VAG Description
----- ----- -----------
P3081 19537 Engine temperature too low
Note: Let engine warm up; coolant temperature must be at least 50 C (122 F), advance scan tool to Diagnostic mode 1: Check measured values; PID 5, Coolant temperature.
SAE VAG Description
----- ----- -----------
P3081 19537 Engine temperature too low
Note: Let engine warm up; coolant temperature must be at least 50 C (122 F), advance scan tool to Diagnostic mode 1: Check measured values; PID 5, Coolant temperature.
#14
Audiworld Junior Member
Thread Starter
Join Date: Sep 2009
Location: Branchburg, Nj
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
yeah, my temp gauge is cold all the time now. At least I know now it's related to the code. Thanks guys for the info. Now the question is: what's next....Do you have any info on troubleshooting the code? Dealer told me that this engine has 2 temperature sensors. I replaced one with TB job. Maybe I should change the other one? Thanks.
#16
Audiworld Junior Member
Thread Starter
Join Date: Sep 2009
Location: Branchburg, Nj
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
No, I replaced the bottom radiator sensor when doing timing belt(lots of posts were pointing to that one). Are you talking about "engine temperature sender for engine control module (G62)"? You may be right. If it is for ecm that explains the check engine light & code. I'll try to find some more info about this sender. I hate changing parts and not knowing why. Do you have more info or experience with this sender? Thanks again!
#17
No, I replaced the bottom radiator sensor when doing timing belt(lots of posts were pointing to that one). Are you talking about "engine temperature sender for engine control module (G62)"? You may be right. If it is for ecm that explains the check engine light & code. I'll try to find some more info about this sender. I hate changing parts and not knowing why. Do you have more info or experience with this sender? Thanks again!
HINT: When you pull out the horseshoe clip/retainer for the sensor it is a bit tricky, you'll have to shimmy it between the sensor and the block, a long screwdriver works well for this. When you re-install the clip, you can install it backwards, for much easier install.
HINT#2: When installing new sensor w/ new o-ring apply just a bit of vaseline on the o-ring so it will slide right in. make sure you get it pushed in all the way or you will have a leak.
Hope this helps!
#19
Audiworld Junior Member
Thread Starter
Join Date: Sep 2009
Location: Branchburg, Nj
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Thanks alot! This is the answer I was looking for. And yeah, I'm familiar with those "tricky" clips and O-rings. Tommorrow I'll tackle it and will come back with the results. Thanks alot for your help emjayem! I love this forum!!!!
#20
Audiworld Junior Member
Thread Starter
Join Date: Sep 2009
Location: Branchburg, Nj
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Aaaa one more thing I forgot! Do you know how much coolant will I loose after removing G62? I don't think it will be alot cause the sensor is pretty high...And yes I know to do it on the cold engine! :-)