HELP! I cannot find this code for my 04 Vette
Thread Starter
Heel & Toe
Joined: Sep 2007
Posts: 18
Likes: 0
From: Waterford Michigan
HELP! I cannot find this code for my 04 Vette
I got a 2004 C-5, with a drivers seat 6 way seat that stopped working, so I read the codes. I got this code in the A-6 SCM section: B0856H, and I can't find it from anyone. Can anybody help me, before I go crazy?
-doug
-doug
Safety Car
Joined: Jan 2001
Posts: 4,390
Likes: 693
From: Boise ID
DTC B0856
Circuit Description
The memory seat module has two battery voltage supply circuits. The battery 1 voltage supply circuit is used to provide power for the memory seat module logic and internal driver operation. The battery 2 voltage supply circuit is used to provide a high current supply for the memory seat module output devices.
Conditions for Running the DTC
The battery 1 circuit voltage to the memory seat module is within 6.5-26.5 volts.
Conditions for Setting the DTC
The memory seat module detects battery 2 voltage under 8.5 volts or over 16.3 volts.
The condition must be present for 2 seconds.
Action Taken When the DTC Sets
A history DTC is stored in the memory seat module.
Memory seat module DTCs can only be set as a history code even if the fault is current.
No driver warning message will be displayed for these DTCs.
Conditions for Clearing the DTC
Memory seat module DTCs may be cleared only by using a scan tool or the IPC clearing DTCs feature.
Diagnostic Aids
A DTC B0846 can be the result of a short to ground in an adjuster motor or control circuit, first diagnose a DTC B2002, B2007, or B2012, if present.
Inspect the battery and charging system for proper operation.
If the fault is not current, the problem may be intermittent.
Circuit Description
The memory seat module has two battery voltage supply circuits. The battery 1 voltage supply circuit is used to provide power for the memory seat module logic and internal driver operation. The battery 2 voltage supply circuit is used to provide a high current supply for the memory seat module output devices.
Conditions for Running the DTC
The battery 1 circuit voltage to the memory seat module is within 6.5-26.5 volts.
Conditions for Setting the DTC
The memory seat module detects battery 2 voltage under 8.5 volts or over 16.3 volts.
The condition must be present for 2 seconds.
Action Taken When the DTC Sets
A history DTC is stored in the memory seat module.
Memory seat module DTCs can only be set as a history code even if the fault is current.
No driver warning message will be displayed for these DTCs.
Conditions for Clearing the DTC
Memory seat module DTCs may be cleared only by using a scan tool or the IPC clearing DTCs feature.
Diagnostic Aids
A DTC B0846 can be the result of a short to ground in an adjuster motor or control circuit, first diagnose a DTC B2002, B2007, or B2012, if present.
Inspect the battery and charging system for proper operation.
If the fault is not current, the problem may be intermittent.
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
I would just clear it. Not only is it a "History" code, but you probably had a voltage fluctuation, and caused it to be tripped
B0846 - +5 Volt Reference Out of Range
B0856 - Battery 2 Out of Range
B0846 - +5 Volt Reference Out of Range
B0856 - Battery 2 Out of Range
Melting Slicks
Joined: Jul 2004
Posts: 2,567
Likes: 1
From: Edmond, OK...One of the first rules of online forums: If you don't like what is said but can't refute it, attack the poster.
This is from the 04 service manual.
B0856
The memory seat module has two battery voltage supply circuits. The battery 1 voltage supply circuit is used to provide power for the memory seat module logic and internal driver operation. The battery 2 voltage supply circuit is used to provide a high current supply for the memory seat module output devices.
Conditions for setting the DTC:
The memory seat module detects battery 2 voltage under 8.5volts or over 16.3 volts. The condition must be present for 2 seconds.
Diagnostic aids:
A DTC B0856 can be the result of a short to ground in an adjuster motor or control circuit. First diagnose a DTC B2002, B2007, or B2012 if present.
Inspect the battery and charging system for proper operation.
If the fault is not current, the problem may be intermittent.
Hope this helps
jeff
B0856
The memory seat module has two battery voltage supply circuits. The battery 1 voltage supply circuit is used to provide power for the memory seat module logic and internal driver operation. The battery 2 voltage supply circuit is used to provide a high current supply for the memory seat module output devices.
Conditions for setting the DTC:
The memory seat module detects battery 2 voltage under 8.5volts or over 16.3 volts. The condition must be present for 2 seconds.
Diagnostic aids:
A DTC B0856 can be the result of a short to ground in an adjuster motor or control circuit. First diagnose a DTC B2002, B2007, or B2012 if present.
Inspect the battery and charging system for proper operation.
If the fault is not current, the problem may be intermittent.
Hope this helps
jeff
Melting Slicks
Joined: Jul 2004
Posts: 2,567
Likes: 1
From: Edmond, OK...One of the first rules of online forums: If you don't like what is said but can't refute it, attack the poster.
LOL, looks like i was a bit late! By the time I typed all the above, many had posted! What a good forum.
jeff
jeff
-doug
Tech Contributor
Joined: Jan 2007
Posts: 19,525
Likes: 1,195
From: Dyer, IN
