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GMC
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2006
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Envoy 4.2 S, 4WD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System - 4.2L - DTC P0420 To P1682
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DTC P0454
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Typical Scan Tool Data
Typical Scan Tool Data
FTP Sensor Voltage
Circuit
Normal Range
Short to Ground
Open
Short to Voltage
FTP Sensor Low Reference
-
1.5 V
4.6 V
-
FTP Sensor Signal
1.5 V
0 V
0 V
5 V
FTP Sensor 5-Volt Reference
-
0 V
0 V
5 V
1
With EVAP system vented to atmosphere