Fault Code 17-1985
Notes: For 1985 models only
sensor output is too low
Power loss light: On
Limp-in mode: None
Bad detonation sensor - The detonation sensor should produce voltage
spikes above 0.04V at 5,000 rpm (you will need an oscilloscope to see them).
Remove the sensor and tap on the bottom of it with a wrench. This
should produce voltage spikes of a couple of volts.
Bad connection or wiring - Check the wiring and connections between
the sensor and the logic module. Clean and regrease any corroded
connectors with dielectric grease. Check to see that the sensor threads
do not have tape on them. This may prevent it from getting a good
- Engine speed above 5,000 rpm
- Sensor voltage output is not greater than 0.04V for 3 seconds
Results If Component Fails
Fault code 17 is stored and the power loss light is turned on. If
the sensor ever outputs more than 0.04V, the power loss light is turned
This page is maintained by Russell W. Knize and was last updated 08/28/98.
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Copyright © 1996-2003 Russ W. Knize