Check engine light

[Jhosk1981]

Guys, I have noticed that my check engine light comes on and goes off when warm, after around 45 mins etc. Sometime it stays on, sometimes not.

I've plugged the green clips together to try and diagnose but no codes come up, the light is off and doesn't flash or anything? what do you think? 

James

[Tidgy]

Sound like need to plug in to find out what's going on.

[stants]

Did you do the black clips 1st ? Black to read and green and black to clear them

[Jhosk1981]

No mate... What's the correct procedure then?

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[stants]

Black connectors together under the dash then turn ignition to the 1st position the check engine light should start to flash out the codes (if any)

[Jhosk1981]

Thanks, I'll try that tomorrow, may as well get it sorted whilst I have a months labour warranty!

[Jhosk1981]

Got it...fault code 22...where do I check what that is?

[Jhosk1981]

Long flash, long flash followed by two short flashes....I presume that means 22.

[stants]

Knock sensor fault, meaning it's not working properly,

Mines just done the same thing in the last couple of months, the sensors get brittle over time and crack as they sit on top of the engine block,

Simple but fiddly to replace cost about 60 quid for genuine part

[Jhosk1981]

Ah OK great.... Wont be a big issue then...do I need to get this done immediately?

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[Scoobyghost]

You should do. Mines been randomly throwing up that code for over a year. Shhh don't tell anyone 😋

[stants]

I would but that's just me unlike ghost who likes to live in the edge [emoji23]

[Scoobyghost]

Risk it for a biscuit.

[stants]

Rebel !

[Jhosk1981]

Does yours come up after you've been driving a while..when engine is hot?

[Scoobyghost]

No. It hasn't came on for a while but it was more prone to come on at cold start through the winter. It came on roughly 4 times over winter months. Stays on for 2-3 seconds then goes off. Don't risk it, the biscuits are usually quite stale anyway 😖😏

[stants]

Does yours come up after you've been driving a while..when engine is hot?

Yes mate, mine had a sudden loss of power flashed on and then went away, all was fine, this was after 45 mins of heavy stop start traffic

[Jhosk1981]

I'll get it swapped whilst the garage I bought it from are doing the fitting for free.

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[Jhosk1981]

My worry was will it get me to japest and back on Sunday!

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[Jhosk1981]

So guys, any ideas here.....Had a new knock sensor fitted recently, all good. No more check engine light on trip back from the garage

Then today, was cleaning the car and moved it, (haven't driven since and it was sat in the heat) check engine light back on, plugged black diagnostic plugs in and boom....Code 22 again!

So I know it's not the sensor now? What's next to check?

Cheers

James.

[Scoobyghost]

Trace the wiring back and check for breaks. Check the connector block too.

[Jhosk1981]

Sounds like a complicated job for a !Removed! like me lol.

 

[Jhosk1981]

Haha removed. Ok you guys get the idea.

 

 

[stants]

Could be moisture underneath the sensor after being washed,

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[Jhosk1981]

Thanks stants, but it came on before I washed it.