P05B6

Symptoms

• Check Engine light on
• Unstable or slow operation of blinds
• The error may appear during startup or during high load on the power grid.
• Possible related codes for other systems (low voltage on board network)
• Blinds periodically freeze

Causes

• High contact resistance in the power circuit (oxidized connectors)
• Weak battery or faulty alternator
• Partial break (broken wire with some cores remaining)
• Voltage drop across power relay
• Total on-board voltage drop

How to Fix

1. Check the voltage of the on-board network with the engine running (normal 13.5–14.5 V)
2. Measure the voltage directly at the power connector of the blinds - compare with the on-board
3. If the difference is more than 0.5 V, find the source of the voltage drop (wires, relay, fuse)
4. Check and clean all connectors in the power circuit
5. Check the condition of the battery and generator
6. Fix the problem found and check the system operation

Related codes

Error P05B6 by Vehicle Brand