SL/R230: AC Off light kills AC operation. Codes B1000-001 B1256-001 Malfunction in ref circuit
06-03-2020, 10:19 AM
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2004 SL500AMG, 2003 SL500 USA
AC Off light kills AC operation. Codes B1000-001 B1256-001 Malfunction in ref circuit
SL AC Troubleshooting
AC Off light kills AC operation. Codes B1000-001 B1256-001 Malfunction in refrigerant circuit HOW DO I FIX? or Faulty Control Unit
How do I fix a malfunction in refrigerant circuit or faulty control unit indicated by AC codes?
Is there a sensor to replace? A short to fix, oil in a connector, a bad connection, anything simple? Is there a troubleshooting guide, circuit diagram, diagram of AC (Air Conditioning) components, something useful?
The AC works perfectly until the AC Off light comes back on. The refrigerant level is measured - optimal.
When I erase codes with My Autel Diaglink, the AC Off light turns off; and the AC works perfectly. After I turn the car off and on a few times, the AC Off light comes back on; the AC quits blowing cold; and I read the following codes:
B1000-001 Stored
The control unit is faulty.
B1256-001 Stored
Malfunction in refrigerant circuit
From my signature, see this is a 2003 SL500 USA model.
Thanks in advance guys!
Thom
AC Off light kills AC operation. Codes B1000-001 B1256-001 Malfunction in refrigerant circuit HOW DO I FIX? or Faulty Control Unit
How do I fix a malfunction in refrigerant circuit or faulty control unit indicated by AC codes?
Is there a sensor to replace? A short to fix, oil in a connector, a bad connection, anything simple? Is there a troubleshooting guide, circuit diagram, diagram of AC (Air Conditioning) components, something useful?
The AC works perfectly until the AC Off light comes back on. The refrigerant level is measured - optimal.
When I erase codes with My Autel Diaglink, the AC Off light turns off; and the AC works perfectly. After I turn the car off and on a few times, the AC Off light comes back on; the AC quits blowing cold; and I read the following codes:
B1000-001 Stored
The control unit is faulty.
B1256-001 Stored
Malfunction in refrigerant circuit
From my signature, see this is a 2003 SL500 USA model.
Thanks in advance guys!
Thom
