B0856
Memory Seat Module 5 Volt Reference Out of Range
B0856 is an OBD-II diagnostic trouble code meaning: Memory Seat Module 5 Volt Reference Out of Range. Common causes: poor contact in the seat memory module connectors, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Seat position memory malfunction
- Malfunctions of the electric seat adjustments
- Locking the seat in one position
Causes
- Poor contact in the seat memory module connectors
- Open or short circuit in wiring harness
- Faulty seat memory module
- Power supply problems (blown fuse, poor ground contact)
- Short circuit in the seat position sensor circuit
How to Fix
- Check the status of the fuses associated with the seat memory module
- Inspect the module connectors for oxidation or damage.
- Check the integrity of the wiring harness and ground contacts
- Measure the 5V reference voltage at the module connector
- If necessary, replace the seat memory module
Related codes
Error B0856 by Vehicle Brand
FAQ
What does the B0856 code mean?
B0856 is an OBD-II diagnostic trouble code that indicates: Memory Seat Module 5 Volt Reference Out of Range
What causes a B0856 error code?
The most common causes of B0856 include: Poor contact in the seat memory module connectors; Open or short circuit in wiring harness; Faulty seat memory module; Power supply problems (blown fuse, poor ground contact).
How do I fix a B0856 diagnostic trouble code?
To fix B0856: Check the status of the fuses associated with the seat memory module. Inspect the module connectors for oxidation or damage.. Check the integrity of the wiring harness and ground contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0856?
Yes, but get it checked soon
How much does it cost to fix B0856?
The estimated repair cost for B0856 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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