28.1 DESCRIROMPTION OF FLASH CODE 28
Flash Code 28 indicates that the engine Air Temperature Sensor (ATS), see Figure 28-1, input to
the ECM has dropped below 5% (normally < 0.25 volts) of the sensor supply voltage.
This diagnostic condition is typically:
Sensor signal circuit is shorted to sensor return
Sensor signal circuit is shorted to ground
All information subject to change without notice.
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