Bosch Vision 300 (Error Code E.01, Test Code C.06)
Hello, I have a Bosch Vision 300 Washing Machine (WFVC4400 UC/24). I've started getting a E01 code recently and decided to replace the door latch with a brand new one. I'm still getting the E01 code after installing the new latch. I ran a test and got a C06 code. I also checked all the drain tubes/boots and pump. I also made sure all the wire harnesses were clipped in tight. Is there anything else I should try? Thank you for any help!
Travis
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Bosch Vision 300 WFVC4400 UC/24 showing E01 after door latch replacement
- The problem
- Bosch Vision 300 washing machine WFVC4400 UC/24 was showing error E01. The door latch/interlock was replaced with a new one, but the same fault remained. A test cycle then showed code C06.
- Likely cause
- Most strongly supported diagnosis is a door lock circuit fault still not being recognised by the machine. The accepted reply says that if a new interlock has not cured E01, the likely areas are the door catch or hinge alignment, damaged or poor lock wiring, an incorrect replacement interlock, or the main control board not reading or supplying the lock signal properly. The exact failed part was not confirmed.
- What fixed it
- Recommended action was to isolate the appliance from the mains, then check that the door closes squarely and the striker and hinges are not worn or misaligned. The lock wiring should be inspected for damaged conductors, overheated terminals, corrosion, or poor continuity back to the control. The replacement interlock should also be confirmed as the exact correct part for WFVC4400 UC/24. If those checks do not reveal the fault, the control board was identified as the most likely suspect and further diagnosis by a suitably qualified appliance engineer was advised.
- Checks to try
- Replaced the door latch/interlock with a new one
- Ran a test and obtained code C06
- Checked the drain tubes/boots and pump
- Checked wire harness plugs were clipped in tightly
- Advised to check door catch and hinge alignment
- Advised to inspect lock wiring for damage, overheating, corrosion or poor continuity
- Advised to check connections and signs of burning at the main PCB
- Advised to confirm the replacement lock was the exact correct part
- Parts or tools mentioned
- Door latch/interlock
- Main control board/PCB
- Door catch/striker
- Door hinge
- Wire harness
Safety: Isolate the washing machine from the mains before checking internal components. Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
Hi Travis,
On Bosch washers, an E01 very often points to a door locking/door closed issue, but if a new interlock hasn’t cured it then the fault may be with the door itself, wiring, or the control board not seeing the lock signal properly.
Before checking anything internal, isolate the washing machine from the mains.
1. Check the door catch and hinges Make sure the door closes squarely and firmly. If the hinge is slightly dropped or the plastic door striker is worn/cracked, the new lock may not engage fully even though it looks shut.
2. Inspect the lock wiring more closely Don’t just check that plugs are fitted tightly. Look for broken conductors, overheated terminals, damaged insulation, or corrosion at the door lock plug and where the loom flexes. A continuity test on the harness back to the control can be worthwhile.
3. Check for a poor connection at the main PCB If the wiring and lock are sound, the control board may not be supplying or reading the lock circuit correctly. Look for signs of burning, a loose connector, or dry solder joints on the board.
4. Consider whether C06 is related or just a test-stage result I wouldn’t want to guess at that code without Bosch service data for your exact model. If the machine stops at the point it should lock the door, that still keeps the focus on the lock circuit/control side.
5. Double-check the replacement part Make sure the new latch/interlock is the exact correct part for WFVC4400 UC/24. Pattern parts or similar-looking versions can cause this sort of issue.
If the door alignment, wiring and correct lock all check out, the main control board becomes the most likely suspect. For mains testing or board diagnosis, it’s best to use a qualified appliance engineer.
WhitegoodsHelp AI
WhitegoodsHelp AI Assistant
This answer was generated automatically by the WhitegoodsHelp AI Assistant. It is not provided by an engineer or any other qualified person, may be inaccurate or incomplete, and is not professional or technical advice. Do not rely on it. Always use your own judgement and consult a qualified engineer before carrying out any electrical, gas or water work. Use is entirely at your own risk. See our full Terms of Use.
SAFETY FIRST: READ BEFORE ACTING ON THIS GUIDANCE
Never work on a live appliance
Always unplug it at the mains before going near it with any tools.
Never attempt gas work
By law, gas appliances must only be worked on by a Gas Safe registered engineer. If your fault involves gas, stop and call a professional. Do not attempt it yourself.
Watch for sharp edges
Outer panels are smooth, but internal parts have sharp machined edges. Wear protective gloves and arm sleeves.
Water appliances can leak
Turn off the water supply before disconnecting any hoses.
Know your limits
If you are not confident testing or working inside the appliance, stop and call a professional.
AI guidance, not guaranteed
This response is generated automatically by the WhitegoodsHelp AI Assistant. It is not professional or technical advice, may be incomplete or wrong, and must not be relied upon. Always use your own judgement and consult a qualified engineer before any electrical, gas or water work.
This is general information only and is not professional advice. The WhitegoodsHelp AI Assistant is not an engineer and is not qualified. See our full Terms of Use.
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