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718 Fault Code Help!!

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Old Mar 21, 2026 | 03:24 PM
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Default 718 Fault Code Help!!

Can some explain what these fault code might be??? The first one is from the right head lamp. The rest is from clock instrument module. What’s causing these fault code, I tried clearing them and it appear again. No lights on dash though. It’s a 718 cayman
RIGHT HEAD LAMP AND DRL is running fine though.
RIGHT HEAD LAMP AND DRL is running fine though.
There are 18 fault codes from clock instrument, not sure what these are. And what’s causing it.
There are 18 fault codes from clock instrument, not sure what these are. And what’s causing it.



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Old Mar 21, 2026 | 09:18 PM
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For starters, state model year, which exact headlight option you have (there are 3. If not LEDs, are the DRLs on bumper, or headlamps?), and ALL mods done to the car that you know of. But more importantly, did you just buy the car? If not, anything done to it recently, especially coding? That many codes, and all over the place, with many different modules, tells me somebody messed with the car, without the proper knowledge. And either coding, or adding an incompatible mod. Or pulling power for a mod where it wasn't supposed to. So let's start with that, and go from there, before making any suggestions. The more details provided, the better potential help.
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Old Mar 22, 2026 | 03:12 AM
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Originally Posted by JCtx
For starters, state model year, which exact headlight option you have (there are 3. If not LEDs, are the DRLs on bumper, or headlamps?), and ALL mods done to the car that you know of. But more importantly, did you just buy the car? If not, anything done to it recently, especially coding? That many codes, and all over the place, with many different modules, tells me somebody messed with the car, without the proper knowledge. And either coding, or adding an incompatible mod. Or pulling power for a mod where it wasn't supposed to. So let's start with that, and go from there, before making any suggestions. The more details provided, the better potential help.
the car is a 2021 GT4 718, with PDLS+. I bought it last year. Everything seems fine to me, nothing really suspicious. No lights or any abnormal lights, I just recently did oil change and spark plugs, and using the icarsoft to reset maintenance light. And just out of curiosity found these codes. Tried to reset and it came back. Well, as I know there’s no mods of any kind when I bought the car, every thing is stock. But the car was tracked before. The codes r from these two section. So code 0386 is from “Right headlight (LED)”, the rest of the (18) codes are from “additional instrument: clock” now got me very frustrated.

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Old Mar 22, 2026 | 04:11 PM
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I got all kinds of headlight faults when adding a DRL on/off to the menu, but it was both. Are you sure the swiveling feature is working on the right side? Seems weird that you just have the right one. As far as the clock, are you sure the chrono is functioning correctly both as a clock, and as a chrono? It could be an actual issue as well. Check both carefully.
And about all of the other bunch of codes, seems to me the previous owner messed up with the coding. The first coding most folks do is 'real coolant temp'. Does your car show '194F' coolant temp all the time when hot? If not, then you'd know for sure the car was coded. So who knows what he did, to throw all of those faults. I always check for faults when coding something, so I can reverse a code the car doesn't like. At any rate, I suggest you post over the coding section over the 718forum, where there are a lot of coding experts there. That's your best bet. But it's good you're not experiencing any obvious issues, so it's not something critical to fix. Didn't you do a PPI? It should have been detected there. Oh well. Hope this helps, and please keep us posted.
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Old Mar 23, 2026 | 12:47 AM
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Originally Posted by JCtx
I got all kinds of headlight faults when adding a DRL on/off to the menu, but it was both. Are you sure the swiveling feature is working on the right side? Seems weird that you just have the right one. As far as the clock, are you sure the chrono is functioning correctly both as a clock, and as a chrono? It could be an actual issue as well. Check both carefully.
And about all of the other bunch of codes, seems to me the previous owner messed up with the coding. The first coding most folks do is 'real coolant temp'. Does your car show '194F' coolant temp all the time when hot? If not, then you'd know for sure the car was coded. So who knows what he did, to throw all of those faults. I always check for faults when coding something, so I can reverse a code the car doesn't like. At any rate, I suggest you post over the coding section over the 718forum, where there are a lot of coding experts there. That's your best bet. But it's good you're not experiencing any obvious issues, so it's not something critical to fix. Didn't you do a PPI? It should have been detected there. Oh well. Hope this helps, and please keep us posted.
stop throwing out your random ideas as solutions. you have no clue what you are talking about. you are going to end up doing more harm, and costing more money, to the OP than should be.

eric - take your car to a dealer and have it checked out properly. don't rely on some random goof on the internet giving out guesses for free - you get what you pay for.
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Old Mar 23, 2026 | 09:07 AM
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^Nasty!!

I've had some problems with fault codes that don't seem to translate into any physical problems. I'm sure taking it to a dealer for a fault fishing expedition is likely to cost a ton of money with no real results
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Old Mar 23, 2026 | 09:22 AM
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Originally Posted by LP718
^Nasty!!

I've had some problems with fault codes that don't seem to translate into any physical problems. I'm sure taking it to a dealer for a fault fishing expedition is likely to cost a ton of money with no real results
fishing expedition? how else do you check codes and possible errors? if you have some new method that gives us all instant, correct results please share it. that would be a money saver!

the dealer will have an authorized, fully working piwis and be able to read the codes and diagnose the issues far better than some random person on the internet with no real experience or reliable methodology nor the correct tools. if there is a trusted, proven local place that is a viable alternative to a dealer it may save a little cash but saving cash should not be the primary objective when dealing with something of this value. i'm not saying we are all made of money but if one can afford a 718 one should be able to afford the repairs it will require.
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Old Mar 23, 2026 | 10:38 AM
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I'm perfectly happy to have "random goofs" as you call them share their experiences on line as long as they are respectful. Isn't that what social media is for?
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Old Mar 23, 2026 | 03:15 PM
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He's one of the 'resident bullies', probably with mommy issues, so bullying makes them feel good about themselves. Unfortunately, it's tolerated on this forum, so it's just best to ignore them, like I did. Take care.
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Old Mar 23, 2026 | 07:09 PM
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Originally Posted by LP718
^Nasty!!

I've had some problems with fault codes that don't seem to translate into any physical problems. I'm sure taking it to a dealer for a fault fishing expedition is likely to cost a ton of money with no real results
well, that's what i am trying to avoid. But i found couple threads on here having the same exact issue. the 18 fault codes from the chrono clock. Some even replaced the clock but the fault code is still exisit.
not sure what happen to the right head lamp though. everything is working fine.
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Old Mar 24, 2026 | 11:00 AM
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Originally Posted by JCtx
He's one of the 'resident bullies', probably with mommy issues.
nope, just issues with you, and coming from you i take that as a badge of honor. it means you got so sick of being proven wrong you couldn't take it anymore.
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Old Mar 25, 2026 | 05:17 PM
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So no lights on the dash, codes come back after being cleared... possibly a loose or bad fuse. As nineball stated, the dealership is your best bet, and piddly things like this typically fall under goodwill fixes, and will 100% be goodwill if you're under warranty.
Personally, if everything is in good working condition I would just stop starring at your iCarSoft screen and go out for a good rip to clear your mind instead
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Old Mar 26, 2026 | 07:37 AM
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One thing I always check first when I ever see faults is the battery voltage. Low voltage tends to be the culprit for a lot of these mysterious codes
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Old Mar 26, 2026 | 11:23 PM
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Originally Posted by BoxKing
One thing I always check first when I ever see faults is the battery voltage. Low voltage tends to be the culprit for a lot of these mysterious codes
This, with this many codes and the car seemingly ok I think it prudent to check the battery as low voltage conditions can cause all kinds of werid faults on these cars.
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