trouble code 12 and 54 cranks good but not start

1993 JEEP GRAND CHEROKEE
189,000 MILES
Avatar
RENRIQUEZ67
  • MEMBER
  • 2 POSTS
no spark to ignition coil checked codes and its giving me a 12 and 54 code
12-battery disconnected within 50 starts
54-no reading from cam shaft sensor while cranking.

i have replaced plugs, wires, crankshaft sensor, ignition coil, battery and still no start. my next purchase could be pcm but i need to know about trouble codes 12 and 54. and how to repair them.
Jul 7, 2013 at 7:41 PM
Advertisement
Avatar
FREEMBA
  • CERTIFIED EXPERT
  • 1,152 POSTS
Code 12 smply means that the battery has been disconnected.

Code 54 is the camshaft sensor, which is inside of the distributor. You'll have to replace the entire distributor.

I would do this instead of replacing the pcm. Especially since the distributors on these are known to go bad fairly often.
Jul 7, 2013 at 8:12 PM
Avatar
RENRIQUEZ67
  • MEMBER
  • 2 POSTS
Thanks for the fast reply. I will change distributer hopefully thats it. M wife needs car to go to work.
Jul 7, 2013 at 8:20 PM
Advertisement