Make: Cadillac

Model: Catera

Engine: 3.0L

Year: 2000

Error codes: P0335,P0727

Knowledge level: I know little about cars

Help needed: Please help me find out what is going on and how to fix it.

  • I'm sorry, industrial devices like Car Computer Control Systems are out of scope for SuperUser. – Frank Thomas Jul 22 '16 at 12:06
  • Both faults point to the crankshaft position sensor, as the engine speed is measured by the same sensor. Did you inspect it's wiring, check whether it operates properly or attempt to replace it? – I have no idea what I'm doing Jul 22 '16 at 12:58
  • Do you have a DVOM? The crankshaft sensor put's out a 2v AC signal, backprobe the sensor connector and check output voltage when cranking. – Ben Jul 22 '16 at 20:40

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