AC issue
Thread Starter
4th Gear
Joined: Jul 2010
Posts: 4
Likes: 0
AC issue
2000 C5 A4.
Just recently had the coil replaced and AC worked on. Now the AC button wont stay on until it seems like it wants to. It did start working and stay on finally when the car reached operating temps. Not sure if that is relavent or not. Just kind of annoying when 100 degrees out is all.
Thanks for any help.
P.S. Used the search function and came up with nothing. Could be how I was searching but not sure.
Just recently had the coil replaced and AC worked on. Now the AC button wont stay on until it seems like it wants to. It did start working and stay on finally when the car reached operating temps. Not sure if that is relavent or not. Just kind of annoying when 100 degrees out is all.
Thanks for any help.
P.S. Used the search function and came up with nothing. Could be how I was searching but not sure.
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
Gotta check for codes first.
Press and hold number 4 on the right side of your steering wheel...simultaneously press the number 1 button four times. You will enter diagnostic mode on your DIC...just let it run through and sit there with a piece of paper and a pen..write fast.
All your codes will be stuff such as P 0140 H C or you're looking from something like B 0440 C or something in the B 03/B 04 area..in the HVAC section
Give the car a second to run through it's little "brake before shift" sequence or just turn the key on and press reset until the screen is clear then do procedure above.
I'll bet you have some codes in the HVAC section...
If no codes, check your R134A levels..27-35 low side, 150-330 high @ 2000 RPM...higher is for higher humidity areas. DONT OVERDO IT ON THESE
Press and hold number 4 on the right side of your steering wheel...simultaneously press the number 1 button four times. You will enter diagnostic mode on your DIC...just let it run through and sit there with a piece of paper and a pen..write fast.
All your codes will be stuff such as P 0140 H C or you're looking from something like B 0440 C or something in the B 03/B 04 area..in the HVAC section
Give the car a second to run through it's little "brake before shift" sequence or just turn the key on and press reset until the screen is clear then do procedure above.
I'll bet you have some codes in the HVAC section...
If no codes, check your R134A levels..27-35 low side, 150-330 high @ 2000 RPM...higher is for higher humidity areas. DONT OVERDO IT ON THESE
Thread Starter
4th Gear
Joined: Jul 2010
Posts: 4
Likes: 0
Gotta check for codes first.
Press and hold number 4 on the right side of your steering wheel...simultaneously press the number 1 button four times. You will enter diagnostic mode on your DIC...just let it run through and sit there with a piece of paper and a pen..write fast.
All your codes will be stuff such as P 0140 H C or you're looking from something like B 0440 C or something in the B 03/B 04 area..in the HVAC section
Give the car a second to run through it's little "brake before shift" sequence or just turn the key on and press reset until the screen is clear then do procedure above.
I'll bet you have some codes in the HVAC section...
If no codes, check your R134A levels..27-35 low side, 150-330 high @ 2000 RPM...higher is for higher humidity areas. DONT OVERDO IT ON THESE
Press and hold number 4 on the right side of your steering wheel...simultaneously press the number 1 button four times. You will enter diagnostic mode on your DIC...just let it run through and sit there with a piece of paper and a pen..write fast.
All your codes will be stuff such as P 0140 H C or you're looking from something like B 0440 C or something in the B 03/B 04 area..in the HVAC section
Give the car a second to run through it's little "brake before shift" sequence or just turn the key on and press reset until the screen is clear then do procedure above.
I'll bet you have some codes in the HVAC section...
If no codes, check your R134A levels..27-35 low side, 150-330 high @ 2000 RPM...higher is for higher humidity areas. DONT OVERDO IT ON THESE
these are the codes that It found.
B0338 Inside Air Temp Sensor Open
B0361 Left Actuator Feedback Short to GND
B0441 Left Actuator Out of Range
U1096 Loss of Communication with IPC
U1064 Loss of Communication with BCM
U1016 Loss of Communication with PCM
havent looked at possible causes yet.
