Help DTC's P0601 P1518
Thread Starter
Cruising
Joined: May 2010
Posts: 10
Likes: 0
Help DTC's P0601 P1518
Hey guys, I have a 1998 and one day did not start (just cranks). The battery was faulty (didn't leak) and replace it with a new one. With the new battery it don't start. Checked for DTC's and found P0601 and P1518. Also already verify all the grounds and check battery voltage at the underhood and interior fuses. Please give me your toughts. Could be the PCM or tha TAC?
Thread Starter
Cruising
Joined: May 2010
Posts: 10
Likes: 0
P0601 is a PCM memory error. I would see if this code can be cleared. If not the PCM is most likely done. 
The P1518 is a PCM to TAC module serial data circuit problem. If the PCM was dead this would probably be an expected code.
I would be concentrating on the P0601 first.
The P1518 is a PCM to TAC module serial data circuit problem. If the PCM was dead this would probably be an expected code.
I would be concentrating on the P0601 first.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,627
Likes: 4,071
From: Cape Coral, Florida
2nd Gear
Joined: Apr 2019
Posts: 2
Likes: 0
Literally the the exact same issues. Had a bad battery and the car just cranks. It threw the code P0601, but nothing else and won’t fire. Fuel pump kicks on for a split second and that’s it. I’ve researched for weeks and found a few companies that fixed the 98 pcms in the past, but they told me just to repin it. I was hoping to find someone who found a way around repinning and upgrading the pcm but i’ve had no luck.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,627
Likes: 4,071
From: Cape Coral, Florida
Literally the the exact same issues. Had a bad battery and the car just cranks. It threw the code P0601, but nothing else and won’t fire. Fuel pump kicks on for a split second and that’s it. I’ve researched for weeks and found a few companies that fixed the 98 pcms in the past, but they told me just to repin it. I was hoping to find someone who found a way around repinning and upgrading the pcm but i’ve had no luck.
Last edited by C5 Diag; May 5, 2019 at 07:58 PM.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,627
Likes: 4,071
From: Cape Coral, Florida
Literally the the exact same issues. Had a bad battery and the car just cranks. It threw the code P0601, but nothing else and won’t fire. Fuel pump kicks on for a split second and that’s it. I’ve researched for weeks and found a few companies that fixed the 98 pcms in the past, but they told me just to repin it. I was hoping to find someone who found a way around repinning and upgrading the pcm but i’ve had no luck.
C1 Connector (Red)
pin 24- black/white- sensor ground jumper
pin 72- black/white- PCM ground
C2 Connector (Blue)
pin 19- pink- PCM Ignition feed
pin 20- orange- PCM battery feed
pin 21- black/white- PCM ground
pin 60- black/white- PCM ground
pin 61 orange- PCM battery feed
Last edited by C5 Diag; May 5, 2019 at 08:25 PM.
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