1994 Geo Prizm check engine light on code 12

Tiny
RSESCHE
  • MEMBER
  • 1994 GEO PRIZM
  • 200,000 MILES
Car runs well but check engine light came on a few days ago. I tried pulling ECM fuses but code came right back. What should I do next and can I still drive the vehicle
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Tuesday, September 20th, 2011 AT 3:42 PM

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Tiny
ASEMASTER6371
  • EXPERT
Code 12 is no rpm signal to the ecm. If the engine is off and key on, this is normal
if it is running, then you have a issue with either the crank sensor or the distributor.

Roy
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Tuesday, September 20th, 2011 AT 4:50 PM

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