P1518 and P0601 codes and won’t start
Thread Starter
4th Gear
Joined: Sep 2022
Posts: 4
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P1518 and P0601 codes and won’t start
Hello all, I have a 1997 C5 with 105,000 miles. The other morning I had to jump my car off with a jumper box and then drove it to work. A few hours after, I went out to try and start it and it wouldn’t start. So I went and bought a battery and swapped it out. Now it will not crank. I have PCM codes 1518 and P0601along with the reduced engine power and TCS so I searched the forum and saw where it’s commonly the ignition switch. I pulled it and sanded down the contacts (there were some arcing on each contact) and I still can’t get it to start. Also when I put the key in the ignition, most of my interior lights flicker and I can hear relays making noise.
Here is a video of what’s going on
https://youtube.com/shorts/1voaTcfVsu8?feature=share
could my PCM really have gone bad when I got to work? Could jumping my car off cause the PCM to fry?
Here is a video of what’s going on
https://youtube.com/shorts/1voaTcfVsu8?feature=share
could my PCM really have gone bad when I got to work? Could jumping my car off cause the PCM to fry?
Melting Slicks
Joined: Sep 2008
Posts: 3,138
Likes: 802
From: Espanola New Mexico
Very unlikely that your PCM has failed, flickering lights and relays making noises is usually a sign of a under voltage condition. Inspect the negaive connection from the battery to the car it is located under the battery, inspect all your battery cable connections and take a meter and measure across the battery terminals, should be around 12.5 volts.
Thread Starter
4th Gear
Joined: Sep 2022
Posts: 4
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Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
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Verdad Gallardo
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,631
Likes: 4,076
From: Cape Coral, Florida
It will probably clear after the PCM is replaced…other DTC’s such as for your SRS are the same way if set.