What C02 actually means
C02 isn't a fault — it's one step of the engineer's test sequence, the part that checks the machine's heater and temperature sensor.
On Whirlpool Zen-type washers, holding the machine in service (test) mode steps through checks labelled C00 to C05. C02 is the heating stage: it switches the heating element on for around ten seconds, shows the temperature the NTC sensor is reporting, and then looks up any stored faults connected with heating — F06, F07 and F27. If you're seeing C02 on the display, the machine has been put into test mode rather than having broken down mid-wash.
What C02 looks like on a Whirlpool washing machine
Most people find this page having searched for what the machine is doing rather than the code itself. On a Whirlpool washing machine, C02 usually shows up as one or more of these:
- Machine door won't open
- Door won't lock or click shut
- Door lock light flashing
- Door stuck shut with the load inside
- Won't start even with the door closed
- Not heating the water
- Washing coming out cold
- Cycle takes far longer than it should
Recognise any of those? That is this fault, and the rest of this page explains what causes it and what you can check yourself.
What usually causes it
- The machine has been left in, or accidentally put into, service test mode
- Someone has run the diagnostic sequence and not exited it
- A previous engineer or shop demonstration left test mode active
- A genuine heating fault found during the test, which will show as an F code (F06, F07 or F27) rather than C02
What you can safely check yourself
Work through these in order. Anything beyond this — panels off, testing parts, anything to do with the wiring — is an engineer's job, and not one to attempt with the machine plugged in.
- Turn the machine off at the wall, leave it a minute, then switch back on and select a normal programme — that clears test mode on most machines
- Note down any F code that appears after the C02 step finishes; that's the code that actually tells an engineer what's wrong
- Check the door is shut properly and the programme dial is on a real wash cycle rather than left mid-selection
Common questions about Whirlpool C02
What does C02 mean on a Whirlpool washing machine?
C02 isn't a fault — it's one step of the engineer's test sequence, the part that checks the machine's heater and temperature sensor. On Whirlpool Zen-type washers, holding the machine in service (test) mode steps through checks labelled C00 to C05. C02 is the heating stage: it switches the heating element on for around ten seconds, shows the temperature the NTC sensor is reporting, and then looks up any stored faults connected with heating — F06, F07 and F27. If you're seeing C02 on the display, the machine has been put into test mode rather than having broken down mid-wash.
Can I fix Whirlpool C02 myself?
There are 3 checks you can safely do yourself first.
- Turn the machine off at the wall, leave it a minute, then switch back on and select a normal programme — that clears test mode on most machines.
- Note down any F code that appears after the C02 step finishes; that's the code that actually tells an engineer what's wrong.
- Check the door is shut properly and the programme dial is on a real wash cycle rather than left mid-selection.
This sometimes clears with those checks. If it comes back, it needs looking at properly.
How much does it cost to repair Whirlpool C02?
£66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.
Tried the checks and it's still showing C02?
This sometimes clears with the checks above. If it comes back, it needs looking at properly. Then it wants someone who can open it up.
What it costs, before you call: the price is the same whatever the fault turns out to be — £66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.
Our own engineers, not a call centre. We cover Nottinghamshire, Derbyshire and Leicestershire — most washing machine faults are seen same day or next day.
Call 0115 648 0929 Book online — postcode and number is all we need
Outside our area? The explanation above still stands — take it to a local engineer and tell them the code. Knowing it saves them time and you money.
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What this looks like when it happens
- washing machine not heating the water
- washing machine tripping the electrics
- washing machine beeping or bleeping