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Diagnostic Trouble Code: 021
Diagnostic Trouble Code Name: Rear Defrost Request Switch Circuit
Vehicle Make: Chevrolet
Vehicle Model: Epica (V250)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Incorrect 5th Gear Ratio
Possible Sensor Faults
TCM
Possible Related Diagnostic Trouble Codes
DTC P0735
Circuit / System Description
The transmission control module (TCM) calculates gear ratio based on data from the automatic transmission input speed sensor (AT?ISS) and the automatic transmission output speed sensor (AT?OSS). The TCM compares the calculated gear ratio to the known gear ratio for each commanded gear.
If the TCM detects an incorrect 5th gear ratio, indicating excessive slip or drag within the transmission, then DTC?P0735 sets. DTC?P0735 is a type?A DTC.
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