[RFI] Escalade and Power Line RFI

[thoyer1 at verizon.net]

The check engine light doesn't always need to be on for a code to be active. Fault codes get stored even if the light turns off. You should be able to look for stored fault codes.

Interesting stuff

Tom
W3TA

-----Original Message-----
From: RFI <rfi-bounces+thoyer1=verizon.net at contesting.com> On Behalf Of James Jordan
Sent: Sunday, December 14, 2025 7:42 PM
To: Chuck Gooden <chuck.gooden at comcast.net>
Cc: rfi at contesting.com
Subject: Re: [RFI] Escalade and Power Line RFI

Yep. Check engine light. On for a couple days and then off for a few more, repeat. I have a code reader but haven’t used it when the light is on.


On Sun, Dec 14, 2025 at 7:04 PM Chuck Gooden via RFI <rfi at contesting.com>
wrote:

> Are you sure it was the check engine light?.  Most engine light that I 
> know of will come on and stay on because the error code is stored in 
> memory.  You can reset the error code with a ODB reader.
>
>
>
> On December 14, 2025 11:38:31 PM UTC, James Jordan <k4qpl2 at gmail.com>
> wrote:
> >Hmmm. Interesting. I have a check engine light that comes on every 
> >now
> and then but after a couple of days it’s off with nothing having been done.
> Shop has never found a problem. I assume system resets and doesn’t see 
> anything.
> >My Audi is full of electronics and sleeps a few feet from my ham 
> >shack
> built into the garage with a 40m dipole almost overhead. The KPA1500 
> power supply is even closer.
> >I’m going to keep tabs on band and power so next time it happens I 
> >can
> see if there’s any correlation.
> >Thanks for the tip.
> >Jim K4QPL
> >
> >
> >Sent from my iPhone
> >
> >> On Dec 14, 2025, at 11:51 AM, K4RO Kirk Pickering <k4ro at k4ro.net>
> wrote:
> >>
> >> Here's an RFI story that I've not encountered before.
> >>
> >>
> https://www.motor1.com/news/781675/cadillac-escalade-power-line-lights
> -on/
> >>
> >> Many thanks to all of the RFI hunters and experts who share their
> knowledge on this list, year after year. IMO, this is one of the most 
> valuable email lists in all of ham radio.
> >>
> >> —Kirk K4RO
> >>
> >>
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> Chuck K9LC
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