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2007
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SX4 Base, Automatic
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Different car
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Section 240 (Engine Performance - Diagnostics - Introduction)
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General Description
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OBD System Description - Comprehensive Component (Engine Input) Monitor
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HO2 B1S2 Rich Decel Fuel Cut-Off (DFCO)
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DTC Description / Detecting Condition / Confirmation Procedure
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DTC Description / Detecting Condition / Confirmation Procedure
WARNING:
This page is about a different car, the 2006 Suzuki Reno and 2006 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.
P1138 refer to
DTC P1138: HO2S Circuit High Voltage During Decel Fuel Cut-Off (DFCO) Sensor 2
.