PartsCompat UK

C1

Error code

medium severity AEG

C1: No Water Inlet

If your AEG dishwasher display is showing a flashing programme indicator and the cycle won't start, you're seeing the C1 error code. This warning tells you that water isn't entering your appliance, which is why the machine has halted its cycle.

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Diagnostic Steps

  1. 1

    Step 1

    Ensure the water tap is fully open

  2. 2

    Step 2

    Clean the filter in the threaded hose fitting

  3. 3

    Step 3

    Check the inlet hose installation

  4. 4

    Step 4

    Inspect the water inlet valve

⚠️ Always disconnect your appliance from mains power before starting any repair. If in doubt, consult a qualified engineer.

Parts to Check in order of probability

1
hoses_accessories medium

Safety System Straight to Hooked End Inlet Hose 1.5m

OEM: 9029793511

If your AEG dishwasher isn't filling with water or you've noticed leaks around the inlet connection, a worn or damaged inlet hose is likely the culprit. Over time, hoses can crack, perish, or develop weak spots that compromise your appliance's performance and potentially cause water damage to your kitchen. This replacement Safety System Straight to Hooked End Inlet Hose (OEM reference 9029793511) restores proper water flow to your dishwasher with a reliable 1.5m length. Installation is straightforward, rated at difficulty level 2, making it achievable for most home DIYers with basic tools. When fitting the new hose, ensure the water supply is switched off at the mains before disconnecting the old inlet hose. This simple precaution prevents accidental flooding and makes the job cleaner and safer. Take note of how the original hose was positioned so you can replicate the routing and avoid kinks that could restrict water flow. Before ordering, please verify your dishwasher's E-Nr model number on the appliance documentation or inside the door frame to confirm compatibility with this part.
2
hoses_accessories medium

High Quality Hot Water Straight to Hooked End Inlet Hose 2.5m

OEM: 9029793503

When your AEG dishwasher fails to fill with water or you notice leaks around the inlet connection, a worn or damaged inlet hose is often the culprit. This replacement hose restores proper water flow to get your dishwasher working reliably again. This high-quality hose (OEM reference 9029793503) is designed specifically for AEG dishwashers and features a straight connection at one end and a hooked end at the other, making it straightforward to fit into place. The 2.5-metre length provides flexibility for various installation configurations in your kitchen setup. Installation is rated at difficulty level 2, making it an accessible DIY project for most homeowners. Before you begin, ensure the water supply is switched off at the isolation valve. When connecting the hooked end, push it firmly onto the inlet valve until you hear a click, ensuring a watertight seal that prevents future leaks. This part addresses general wear and failure issues common with older inlet hoses. Before ordering, please verify the E-Nr model number on your dishwasher to confirm compatibility with your specific appliance.
3
hoses_accessories medium

Classic Imq Straight to Hooked End Inlet Hose 2.5m

OEM: 9029793438

When your AEG dishwasher stops filling with water or you notice leaks around the inlet connection, a worn or damaged inlet hose is often the culprit. Over time, these hoses deteriorate from regular use, temperature changes, and water pressure, leading to loss of performance or water damage. This Classic IMQ Straight to Hooked End Inlet Hose (OEM reference 9029793438) is a genuine replacement that restores proper water flow to your appliance. At 2.5 metres long, this hose features a straight connection on one end and a hooked fitting on the other, providing flexibility during installation. The replacement is straightforward, rated difficulty level 2, making it manageable for most confident DIY homeowners. Before you begin, ensure the water supply is switched off and the dishwasher is empty and cool. A helpful tip: secure the hose connections firmly but don't overtighten them, as this can damage the fittings. Run a test cycle after installation to check for leaks. Before ordering, please verify your dishwasher's E-Nr model number matches this part's compatibility to ensure a perfect fit.
4
hoses_accessories medium

High Quality Cold Water Straight to Hooked End Inlet Hose 2.5m

OEM: 9029793479

When your AEG dishwasher won't fill with water or you notice leaks around the inlet connection, a worn or damaged inlet hose is often the culprit. Over time, these hoses can perish, crack, or become brittle, compromising your appliance's performance and potentially causing water damage to your kitchen. This high-quality replacement hose (OEM reference 9029793479) restores reliable water flow to your dishwasher with a robust 2.5-metre length that fits most installations. The straight-to-hooked end design ensures a secure fit at both the water supply and dishwasher connection points. Installation is straightforward, rated at difficulty level 2, making this an ideal DIY repair for most homeowners. Before you begin, switch off the water supply and turn off the dishwasher at the mains. A useful tip: have a towel handy to catch any residual water when disconnecting the old hose. Simply unbolt the faulty hose and slide the new one into place, tightening the connections firmly but without over-tightening. Please verify your dishwasher's E-Nr model number matches our compatibility list before ordering to ensure this part is correct for your appliance.
5
hoses_accessories medium

High Quality Hot Water Straight to Hooked End Inlet Hose 1.5m

OEM: 9029793495

If your AEG dishwasher isn't filling with water or is leaking around the inlet connection, a worn or damaged inlet hose is likely the culprit. Over time, these hoses can crack, split, or deteriorate, preventing water from reaching your appliance or causing pooling beneath it. This genuine replacement hose restores proper water flow and eliminates leaks, getting your dishwasher back to reliable operation. This high-quality inlet hose features a straight connection at one end and a hooked fitting at the other, designed to connect your water supply directly to the dishwasher's inlet valve. The 1.5-metre length provides flexibility during installation, and the robust construction ensures long-lasting performance. Installation is straightforward, rated at difficulty level 2. When fitting the new hose, ensure you hand-tighten the connections fully before running water through, as this prevents leaks at the joints. This part is compatible with AEG dishwashers and carries the OEM reference 9029793495. Before ordering, please verify your appliance's E-Nr model number against our compatibility list to ensure this is the correct replacement for your specific model.

Frequently Asked Questions

What does the C1 error mean on a AEG dishwasher?↓
If your AEG dishwasher display is showing a flashing programme indicator and the cycle won't start, you're seeing the C1 error code. This warning tells you that water isn't entering your appliance, which is why the machine has halted its cycle. Whilst this might sound concerning, the good news is that many C1 faults can be resolved without calling out an engineer, saving you time and money. The problem typically stems from a few common culprits. Start by checking your water supply—ensure the tap is turned on fully and that the inlet hose isn't kinked or frozen. Next, inspect the water inlet filter, a small mesh screen that can become clogged with debris over time. You should also examine the inlet valve itself, which may have failed or become stuck. In some cases, a blocked or faulty pump or pressure switch could be responsible, though these are less common. Before investigating any components, always switch off your dishwasher at the mains for safety. Most homeowners can handle these checks independently with basic tools.
Can I fix the C1 error myself?↓
Many C1 faults can be resolved by a competent DIYer. Always disconnect from mains power first. If unsure, consult a qualified engineer.

Quick Summary

Code
C1
Brand
AEG
Parts to check
5