15.1 DESCRIPTION OF FLASH CODE 15
Flash Code 15 indicates that the Coolant Temperature Sensor (CTS), or Oil Temperature Sensor
(OTS), see Figure 15-1, input to the ECM has dropped below 5% (normally < 0.25 volts) of
the sensor supply voltage.
This diagnostic condition is typically:
Sensor signal is shorted to the sensor return circuit or to ground
All information subject to change without notice.
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