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Error code 23

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N12turbo_DK2300
Posts: 14
Joined: Sat Jul 11, 2015 8:18 am

Error code 23

Post by N12turbo_DK2300 » Wed Aug 12, 2020 2:37 am

Hi
I'm getting error 23 (idle switch issues) on the stock ECU (CECU), but only when engine is running (!!), is this normal? Can the error 23 indicate other errors, then issues with the idle switch?

Tested/done:
Key ON: Error 23. Depress pedal, and back in neutral/idle: Code 23 clears
Engine on: Error 23. Depress pedal, and back in neutral/idle: Code 23 remains
Tested pin 18 and 25: As expected with continuity, and it is as expected

I've looked through Haynes, and the workshop manuals, but only found error 23 to be regarding the idle switch... but can other sensor or idle switch affect it?

Car: European N12 Turbo.

Best regards.

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KiloooNL
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Posts: 76
Joined: Wed Jun 05, 2013 12:27 am
Location: Adelaide, Australia

Error code 23

Post by KiloooNL » Wed Sep 23, 2020 9:43 pm

N12turbo_DK2300 wrote:
Wed Aug 12, 2020 2:37 am
Hi
I'm getting error 23 (idle switch issues) on the stock ECU (CECU), but only when engine is running (!!), is this normal? Can the error 23 indicate other errors, then issues with the idle switch?

Tested/done:
Key ON: Error 23. Depress pedal, and back in neutral/idle: Code 23 clears
Engine on: Error 23. Depress pedal, and back in neutral/idle: Code 23 remains
Tested pin 18 and 25: As expected with continuity, and it is as expected

I've looked through Haynes, and the workshop manuals, but only found error 23 to be regarding the idle switch... but can other sensor or idle switch affect it?

Car: European N12 Turbo.

Best regards.
Error 23 is the TPS, on the throttle body.
It's basically either open or closed. You want it to open as soon as you put your foot on the pedal more or less.
Nothing to worry about, it won't change a bloody thing with the engine running. The ECU isn't that smart.

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