Sun Sensor error B1340
Thread Starter
Junior Member
Joined: May 2021
Posts: 71
Likes: 7
From: Colorado Springs, CO
CLK500
Sun Sensor error B1340
In doing an OBD2 test on my 2005 CLK500 cabriolet, I found the error B1340 "Communication error of AC bus with component b32/2 (AAC sun sensor error (4 in total)) I can't see a sun sensor on the dash of my convertible. Any idea where it/they might be?
I do have the dreaded clicking under the dash, but the AC is working.
I aslo get these:
B1100 Normalizing failut
B15C0 Right fresh air flap
But I'm not certain that's associated with the sun sensor question.
I do have the dreaded clicking under the dash, but the AC is working.
I aslo get these:
B1100 Normalizing failut
B15C0 Right fresh air flap
But I'm not certain that's associated with the sun sensor question.
Last edited by Santa_Jay; Sep 6, 2025 at 12:12 PM. Reason: Incorrect error code
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Joined: Feb 2017
Posts: 2,333
Likes: 1,225
From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
In doing an OBD2 test on my 2005 CLK500 cabriolet, I found the error B1340 "Communication error of AC bus with component b32/2 (AAC sun sensor error (4 in total)) I can't see a sun sensor on the dash of my convertible. Any idea where it/they might be?
I do have the dreaded clicking under the dash, but the AC is working.
I aslo get these:
B1100 Normalizing failut
B15C0 Right fresh air flap
But I'm not certain that's associated with the sun sensor question.
I do have the dreaded clicking under the dash, but the AC is working.
I aslo get these:
B1100 Normalizing failut
B15C0 Right fresh air flap
But I'm not certain that's associated with the sun sensor question.
is it located on the back of the rear view mirror, or located in the top of the hood near the windshield, if there are vents there.
Thread Starter
Junior Member
Joined: May 2021
Posts: 71
Likes: 7
From: Colorado Springs, CO
CLK500
I'll wait till the hood is back on to further explore.
Thanks again.
